Salicylic Acid (BHA) 100 g – Exfoliating Active for Skincare Formulations

BHA Cosmetic Ingredient for Pore Care, Oily Skin & Exfoliating Products

Salicylic Acid is a well-known cosmetic exfoliating ingredient commonly marketed as a Beta Hydroxy Acid (BHA).

It is widely used in professionally developed skincare formulations designed to improve the appearance of:

• Congested-looking pores
• Blackheads and surface buildup
• Oily-looking skin
• Rough skin texture
• Dull-looking complexion
• Uneven skin appearance
• Accumulated dead surface skin cells

Salicylic Acid is commonly incorporated into:

• Exfoliating facial serums
• BHA facial toners
• Facial cleansing gels
• Pore-care formulations
• Oily-skin skincare products
• Chemical exfoliating products
• Selected shampoos
• Scalp exfoliating products
• Specialty cosmetic formulations

Its effectiveness depends on the finished formulation, particularly the active concentration, solubility, pH and application method.

What Is Salicylic Acid?

Salicylic Acid is an organic compound chemically known as 2-hydroxybenzoic acid.

It occurs naturally in certain plants but is commonly manufactured synthetically for commercial applications.

In the cosmetics industry, Salicylic Acid is widely referred to as a BHA exfoliant.

INCI Name: Salicylic Acid
Chemical Name: 2-Hydroxybenzoic Acid
CAS Number: 69-72-7
EC Number: 200-712-3
Chemical Formula: C7H6O3
Molecular Weight: 138.12 g/mol
Typical Appearance: White Crystalline Powder
Primary Cosmetic Functions: Exfoliating / Skin Conditioning

The exact purity and physical form should be verified against the supplier’s Certificate of Analysis.

How Does Salicylic Acid Work?

Salicylic Acid helps loosen and remove accumulated cells from the outermost surface of the skin.

Its chemical characteristics also make it useful in formulations designed for oily-looking skin and pore congestion.

In an appropriately developed cosmetic product, it may contribute to:

• Smoother skin texture
• Reduced appearance of surface buildup
• Cleaner-looking pores
• Less visible congestion
• Improved skin radiance
• A more refined-looking complexion

The actual effects depend on the complete formulation and the condition of the skin.

Salicylic Acid for Blackheads

Blackheads are associated with a buildup of sebum and skin cells within hair follicles.

Salicylic Acid is commonly selected for products designed to improve the appearance of congested pores.

Cosmetic formulations containing Salicylic Acid may help support:

• Surface exfoliation
• Reduced accumulation of dead skin cells
• Cleaner-looking pores
• Smoother-looking skin
• Improved appearance of blackhead-prone areas

However, a cosmetic product should not promise permanent elimination of blackheads.

Pore-Care Formulations

Salicylic Acid is one of the most popular ingredients in pore-focused cosmetic skincare.

It may be used in formulations designed for areas such as:

• Nose
• Forehead
• Chin
• Other oily-looking facial areas

Suitable cosmetic claims include:

“Helps improve the appearance of clogged pores.”

“Supports smoother and clearer-looking skin.”

“Helps reduce the appearance of surface congestion.”

Salicylic Acid does not permanently shrink pores or alter their anatomical structure.

Salicylic Acid for Oily Skin

Salicylic Acid is particularly popular in skincare products intended for oily and combination skin.

It can help address the appearance of surface buildup associated with excess oil.

However, Salicylic Acid should not automatically be described as directly stopping sebum production.

Its primary cosmetic role is exfoliation and improvement of skin surface appearance.

Use in Facial Cleansers

Salicylic Acid may be incorporated into compatible facial cleansing formulations.

Possible product concepts include:

• Pore-clearing facial cleansers
• Exfoliating cleansing gels
• Cleansers for oily-looking skin
• BHA facial washes
• Skin-smoothing cleansers

Its function is different from that of a cleansing surfactant.

Salicylic Acid does not replace primary cleansing ingredients such as:

• Cocamidopropyl Betaine
• Decyl Glucoside
• Coco Glucoside
• Sodium Cocoyl Glutamate

These materials provide cleansing and foaming properties, while Salicylic Acid functions as an exfoliating cosmetic active.

Use in Facial Serums

Salicylic Acid is also used in specialized leave-on facial serums.

These products are typically developed with carefully controlled:

• Active concentration
• Solvent system
• Finished-product pH
• Skin compatibility
• Preservation
• Packaging
• Stability

Because leave-on products remain on the skin for longer periods, particular attention should be paid to irritation potential.

Use in BHA Toners

Salicylic Acid can be incorporated into specially developed exfoliating toners.

An effective formulation requires more than simply adding the powder to water.

Since Salicylic Acid has limited water solubility, a suitable solvent system or other validated solubilization strategy may be required.

The formula must remain stable throughout its intended shelf life.

Chemical Exfoliation

Salicylic Acid is classified as a chemical exfoliating ingredient.

Unlike physical exfoliants such as walnut shell powder, chemical exfoliants do not rely on abrasive particles to remove surface cells.

This makes Salicylic Acid useful in product concepts designed around controlled exfoliation.

However, chemical exfoliation is not automatically irritation-free.

Concentration, pH and application frequency must be carefully selected.

Salicylic Acid vs. Glycolic Acid

Both Salicylic Acid and Glycolic Acid are popular exfoliating cosmetic ingredients.

Salicylic Acid

• Commonly marketed as a BHA
• Limited water solubility
• Useful in pore-care formulations
• Popular in oily-skin skincare
• Requires careful solubilization

Glycolic Acid

• Alpha Hydroxy Acid (AHA)
• Water-soluble
• Commonly used for surface exfoliation
• Popular in skin-texture and tone-care formulations
• Requires controlled pH and concentration

Both ingredients can be useful in cosmetic skincare, but they are not direct substitutes.

Salicylic Acid vs. Lactic Acid

Lactic Acid is another popular cosmetic exfoliating ingredient.

Salicylic Acid

Frequently selected for formulations focused on pore congestion and oily-looking skin.

Lactic Acid

Frequently selected for surface exfoliation and products combining exfoliating and humectant-related characteristics.

The preferred ingredient depends on the complete product concept.

Water Solubility

Salicylic Acid is only slightly soluble in water.

At room temperature, its water solubility is approximately:

0.2–0.22 g per 100 mL of water

This is an important consideration for formulation development.

A formula containing 2% Salicylic Acid cannot generally be prepared by simply dissolving the full amount in room-temperature water.

A suitable solvent or formulation strategy may be needed.

Suitable Solvent Systems

Salicylic Acid has greater solubility in selected solvents than in water.

Depending on the formulation, solvents may include:

• Ethanol
• Propylene Glycol
• Certain glycol-based solvents
• Selected cosmetic esters
• Other compatible solubilizing systems

The actual solubility depends on the solvent concentration, temperature and other formulation ingredients.

Salicylic Acid should not be described as freely soluble in every cosmetic oil.

Salicylic Acid in Oil-Based Products

Although Salicylic Acid is often described as oil-soluble in cosmetic marketing, its solubility varies considerably among oils and esters.

It should not be assumed that Salicylic Acid will dissolve completely in:

• Olive Oil
• Coconut Oil
• Sweet Almond Oil
• Jojoba Oil
• Other vegetable oils

without formulation testing.

Specialized cosmetic solvent systems may be required.

Crystallization Risk

Salicylic Acid may crystallize if the formulation cannot maintain the required amount in solution.

Potential problems include:

• White crystals
• Sedimentation
• Gritty texture
• Uneven ingredient distribution
• Changes in appearance
• Reduced formulation consistency

A product that appears clear when heated may develop crystals after cooling.

Always evaluate the finished formulation under suitable storage conditions.

Why Formulation pH Matters

Salicylic Acid is a weak organic acid.

Its acid dissociation characteristics affect the proportion of ionized and non-ionized Salicylic Acid in a formulation.

The acid has a pKa of approximately:

2.97

As pH increases, a greater proportion exists in its ionized salicylate form.

This can affect:

• Solubility
• Exfoliating performance
• Formulation behavior
• Skin compatibility

For this reason, active concentration and finished-product pH should be evaluated together.

Is pH 3–5 Always Suitable?

No.

A statement such as “Suitable at pH 3.0–5.0” does not establish the performance or safety of every Salicylic Acid formulation.

The correct pH depends on:

• Product type
• Active concentration
• Solvent system
• Intended use
• Skin compatibility
• Other ingredients
• Preservative system
• Regulatory requirements

Professional formulation requires accurate pH measurement and stability testing.

Typical Cosmetic Usage Levels

There is no universal Salicylic Acid percentage for every cosmetic product.

For compatible adult facial skincare formulations, a starting range sometimes evaluated is:

0.5–2% active Salicylic Acid

However, this is not an automatic recommendation for every product.

The appropriate concentration must comply with applicable regulations and be justified through a finished-product safety assessment.

The allowed concentration may be lower for certain product categories.

European Union Cosmetic Restrictions

Salicylic Acid is a restricted cosmetic ingredient under Regulation (EC) No 1223/2009.

For non-preservative cosmetic use, the relevant EU conditions include:

Rinse-Off Hair Products

Maximum: 3%

Most Other Permitted Cosmetic Products

Maximum: 2%

Specific Restricted Categories

Maximum: 0.5% for categories including:

• Body lotions
• Eye shadows
• Mascaras
• Eyeliners
• Lipsticks
• Roll-on deodorants

Additional restrictions apply.

Salicylic Acid must not be used in cosmetic preparations for children under three years of age.

Applications that may expose the lungs through inhalation and oral products are also restricted.

These limits refer to the finished cosmetic product and do not replace the required safety assessment.

Children & Salicylic Acid

Salicylic Acid is not suitable for unrestricted use in children’s cosmetic products.

In the EU, it must not be used in cosmetic products intended for children under three years of age.

For children aged 3–10 years, scientific safety evaluations have also raised concerns about aggregate exposure to Salicylic Acid from multiple products.

Cosmetic manufacturers should consider the intended age group and current regulatory requirements.

Use in Shampoo

Salicylic Acid may be incorporated into selected shampoo formulations.

It can be used in products designed to support:

• Scalp exfoliation
• Removal of surface buildup
• Cleaner-feeling scalp
• Improved scalp-care routines

Its effectiveness depends on contact time, concentration, pH and the surfactant system.

Salicylic Acid & Dandruff Claims

Salicylic Acid is also used as an active ingredient in certain regulated anti-dandruff products.

However, medical claims such as:

• Treats dandruff
• Treats seborrheic dermatitis
• Treats psoriasis
• Cures scalp disease

may require drug or medicinal-product authorization, depending on the country.

For ordinary cosmetic products, safer wording focuses on:

“Helps remove accumulated surface flakes and scalp buildup.”

The finished product must support any advertised performance claims.

Salicylic Acid in Soap Making

Although Salicylic Acid is often marketed as a soap-making additive, traditional cold process soap is generally not the preferred application for its exfoliating properties.

Cold process soap is naturally alkaline.

Salicylic Acid behaves differently in alkaline soap than in an appropriately formulated acidic skincare product.

Cold Process Soap

Traditional cold process soap is produced through saponification using sodium hydroxide.

When Salicylic Acid is added to a strongly alkaline soap mixture, it can react with sodium hydroxide to form sodium salicylate.

This changes the chemical form of the ingredient.

It also consumes part of the available sodium hydroxide.

Therefore, Salicylic Acid should not simply be added to an existing soap recipe without accounting for the acid-base chemistry.

Does Salicylic Acid Make an Exfoliating Soap?

Not necessarily.

Adding Salicylic Acid to traditional soap does not guarantee that the finished bar will deliver the exfoliating benefits associated with a properly formulated BHA serum.

The strong alkalinity of soap changes the ingredient’s chemical environment.

In addition, soap is a rinse-off product with relatively short skin contact time.

For these reasons, traditional soap is not a preferred delivery system for high-performance Salicylic Acid skincare.

Melt & Pour Soap

Salicylic Acid may also present formulation challenges in melt and pour soap bases.

Potential problems include:

• Changes in pH
• Crystallization
• Reduced clarity
• Changes in texture
• Ingredient incompatibility

Do not assume that adding Salicylic Acid to an existing soap base will create an effective BHA treatment.

Better Applications Than Traditional Soap

Salicylic Acid is generally more suitable for professionally developed formulations such as:

• BHA facial serums
• Exfoliating facial toners
• Mildly acidic cleansing gels
• Pore-care products
• Selected scalp-care formulations

These systems allow greater control of concentration, solubility and finished-product pH.

Cosmetic vs. Medical Claims

Salicylic Acid has uses in both cosmetic and medicinal products.

In cosmetics, appropriate positioning may include:

• Exfoliating
• Skin smoothing
• Pore appearance care
• Improved appearance of surface buildup
• Oily-skin cosmetic care

Avoid automatically claiming that a cosmetic product:

• Cures acne
• Prevents all pimples
• Treats psoriasis
• Treats seborrheic dermatitis
• Permanently removes blackheads
• Treats skin infections

The regulatory classification of the finished product depends on its intended purpose, claims, formulation and target market.

Does Salicylic Acid Act as an Antibacterial Ingredient?

Salicylic Acid may have antimicrobial properties under certain conditions.

However, its inclusion does not automatically make a finished cosmetic product:

• Antibacterial
• Disinfecting
• Antiseptic
• Suitable for treating infections

Such claims may trigger additional regulatory requirements.

Is Salicylic Acid a Preservative?

Salicylic Acid is also recognized as a preservative under specific cosmetic regulations.

In the EU, its use as a preservative is regulated separately, with a maximum concentration of 0.5% expressed as acid, subject to applicable restrictions.

However, adding Salicylic Acid does not automatically guarantee adequate microbiological preservation.

The complete product may still require preservative efficacy testing.

Combining Salicylic Acid With Niacinamide

Salicylic Acid may be combined with Niacinamide in selected professionally developed cosmetic formulations.

However, the formulation must account for:

• Finished-product pH
• Ingredient stability
• Skin tolerance
• Solubility
• Total active concentration

Combining these ingredients does not automatically improve performance.

Combining Salicylic Acid With AHA Ingredients

Salicylic Acid may be used in specialized products containing other exfoliating ingredients, including:

• Glycolic Acid
• Lactic Acid
• Mandelic Acid

However, combining multiple exfoliating acids can increase the potential for irritation.

Such formulations require careful development and finished-product evaluation.

Combining Salicylic Acid With Retinol

Salicylic Acid and Retinol are both used in cosmetic skincare.

However, both may contribute to skin irritation when used inappropriately.

Products containing these ingredients require careful consideration of:

• Concentration
• Application frequency
• pH compatibility
• Consumer tolerance
• Product stability

Using multiple strong cosmetic actives simultaneously is not automatically beneficial.

Salicylic Acid & Sun Protection

Salicylic Acid is not a sunscreen.

It does not provide SPF or direct UVA/UVB protection.

Consumers using exfoliating skincare should follow suitable sun-protection practices, particularly when managing uneven pigmentation or irritation-prone skin.

Broad-spectrum sunscreen and avoiding excessive UV exposure are sensible components of an exfoliating skincare routine.

Sensitive Skin Considerations

Salicylic Acid may cause irritation in some individuals.

Possible reactions include:

• Redness
• Dryness
• Stinging
• Peeling
• Burning sensations
• Skin discomfort

Skin sensitivity depends on concentration, pH, contact time and the complete formulation.

Products intended for sensitive skin require careful safety evaluation.

Salicylate Sensitivity

Individuals with known sensitivities to salicylates or aspirin-related compounds may require particular caution.

A product containing Salicylic Acid should not automatically be described as hypoallergenic.

Consumers with a relevant allergy history should obtain appropriate medical advice before use.

Use on Damaged Skin

Salicylic Acid-containing exfoliating products should generally not be applied to:

• Open wounds
• Severely irritated skin
• Broken skin
• Recently damaged skin
• Areas with significant barrier disruption

unless specifically directed by an appropriate healthcare professional.

Eye Safety

Salicylic Acid can be irritating to the eyes.

Avoid direct contact with the eyes and surrounding sensitive tissues.

Eye-area products require dedicated safety evaluation.

The concentrated powder must never be placed directly on the skin or near the eyes.

Pregnancy & Breastfeeding Considerations

Products containing Salicylic Acid should be assessed according to their concentration, application area and intended use.

Pregnant or breastfeeding consumers should consult a healthcare professional before using concentrated or extensive-area acid treatments.

The suitability of a specific finished cosmetic product cannot be determined from the ingredient name alone.

Product Details

Product Name: Salicylic Acid
INCI Name: Salicylic Acid
Chemical Name: 2-Hydroxybenzoic Acid
CAS Number: 69-72-7
EC Number: 200-712-3
Chemical Formula: C7H6O3
Molecular Weight: 138.12 g/mol
Weight: 100 g
Typical Appearance: White Crystalline Powder
Ingredient Type: Cosmetic Exfoliating Active
Water Solubility: Approximately 0.2% at Room Temperature
Primary Applications: Facial Cleansers, BHA Serums, Exfoliating Toners and Selected Scalp-Care Formulations

Purity: Refer to Supplier COA
Physical Form: Confirm Against Product Specification
Cosmetic Grade: Confirm with Supplier Documentation

Purity & Raw Material Specifications

Only describe the product as:

100% Pure Salicylic Acid

if this is supported by the actual supplier Certificate of Analysis.

For professional cosmetic manufacturing, important specifications include:

• Salicylic Acid assay
• Chemical identity
• Appearance
• Purity
• Moisture content
• Impurity limits
• Relevant heavy metal specifications
• Recommended solvents
• Safety Data Sheet (SDS)
• Technical Data Sheet (TDS)
• Certificate of Analysis (COA)

The supplied material must be suitable for the intended cosmetic application.

How to Incorporate Salicylic Acid

Professional formulation requires a validated procedure appropriate to the selected solvent system.

General development considerations include:

1. Verify the raw-material purity and active content.
2. Determine the permitted finished-product concentration.
3. Select a suitable solvent or solubilizing system.
4. Ensure the ingredient is appropriately dissolved or incorporated.
5. Avoid conditions that may cause precipitation.
6. Combine with the remaining formulation ingredients.
7. Verify the finished-product pH.
8. Evaluate stability at different temperatures.
9. Complete the required safety and microbiological testing.

This is a general development outline, not a ready-to-use exfoliating formula.

Why Accurate Weighing Matters

Salicylic Acid is a concentrated active ingredient.

Small weighing errors can cause significant differences in the final concentration.

Professional formulation should use:

• Precision scale
• Suitable mixing equipment
• Calibrated pH meter
• Appropriate protective equipment
• Validated manufacturing procedures

Do not estimate active concentrations by volume or approximate spoon measurements.

Stability Testing

Professional Salicylic Acid formulations should be evaluated for:

• Crystallization
• Appearance
• pH stability
• Chemical compatibility
• Viscosity
• Temperature stability
• Packaging compatibility
• Microbiological quality
• Preservative efficacy where applicable

Cold-storage stability is particularly important for formulations that approach the solubility limit of Salicylic Acid.

Cosmetic Safety Assessment

Before commercial sale, the finished cosmetic product should undergo an appropriate safety assessment.

This assessment should consider:

• Active concentration
• Application area
• Product type
• Consumer age
• Frequency of use
• Exposure duration
• Additional cosmetic ingredients
• Intended market regulations

Legal maximum concentration does not automatically establish that a particular formulation is safe or suitable.

Safety Information

Salicylic Acid is a concentrated cosmetic raw material.

During professional handling:

• Avoid inhaling fine powder.
• Avoid direct eye contact.
• Wear suitable protective gloves.
• Wear eye protection.
• Avoid prolonged direct skin contact.
• Do not ingest.
• Keep away from children and pets.
• Follow the supplier SDS and TDS.

The raw ingredient must not be treated as a ready-to-use skincare product.

Do Not Apply Pure Salicylic Acid Directly to Skin

Pure Salicylic Acid powder should never be rubbed directly onto the face or body.

Direct contact with concentrated material may cause significant irritation or chemical injury.

Salicylic Acid must first be incorporated into an appropriately formulated and safety-assessed product.

Storage

Store Salicylic Acid:

• In tightly closed packaging
• In a cool and dry environment
• Protected from moisture
• Away from direct sunlight
• Away from contamination
• Separate from incompatible chemicals
• According to supplier recommendations

Keep the container tightly closed after dispensing.

Wholesale, Private Label & Contract Manufacturing

We supply Salicylic Acid, cosmetic exfoliating ingredients, AHAs, BHAs, humectants, surfactants and other skincare formulation raw materials in wholesale quantities for cosmetic brands, laboratories, retailers, manufacturers and professional formulators.

We also provide custom cosmetic formulation development services for BHA facial cleansers, exfoliating serums, pore-care formulations, skincare toners and selected scalp-care products.

Our formulation development services may include:

• Raw-material selection
• Active concentration planning
• Solvent-system development
• pH optimization
• Ingredient compatibility assessment
• Cosmetic formulation development
• Stability recommendations
• Manufacturing procedures
• Technical specifications
• Quality-control recommendations
• Supporting technical documentation

Private label and contract manufacturing services are available for selected liquid soaps, detergents and cleansing products within our manufacturing capabilities. Custom cosmetic formulation development projects can be evaluated separately from physical manufacturing.

For bulk Salicylic Acid orders, professional cosmetic formulation development, private label or contract manufacturing inquiries, please contact us with your required raw-material grade, purity, product concept, intended application, packaging requirements, target market and estimated quantity.