Lactic Acid 90%

Lactic Acid 90% – Cosmetic Formulation Ingredient is a concentrated alpha hydroxy acid used by trained cosmetic formulators, skincare makers, and small-batch beauty brands in properly formulated cosmetic products.

Lactic acid is commonly used in cosmetic formulations as an AHA ingredient and pH adjuster. It may be used in compatible water-based formulas, emulsions, lotions, creams, body care products, and other cosmetic formulations when properly diluted, tested, and formulated within appropriate finished-product limits.

This ingredient is supplied as a concentrated raw material and must not be applied directly to the skin. Lactic Acid 90% is strongly acidic and should be handled with care using proper formulation knowledge, accurate measuring tools, and appropriate protective equipment.

This product is for external cosmetic formulation use only. It is not a finished skincare product and is not intended for direct undiluted application, chemical peel use, medical use, or treatment of any skin condition.

Application Type

• Cosmetic raw material
• Alpha hydroxy acid ingredient
• pH adjuster
• Water-soluble cosmetic ingredient
• Formulator-use skincare ingredient
• Body care formulation ingredient
• Face care formulation ingredient after proper testing
• Professional cosmetic formulation uses only

Formulation Notes

Lactic Acid 90% is a concentrated acid and must be properly diluted into a finished cosmetic formula.

Finished products containing AHAs require careful formulation, pH testing, stability testing, preservative testing, and appropriate labeling. The final product must be formulated to avoid unsafe use and must follow applicable cosmetic labeling requirements for the market where it is sold.

Do not use this ingredient to make high-strength peels unless you are properly trained and qualified. This product is not offered as a chemical peel product.

Suggested Usage Rate

Typical cosmetic usage depends on the final formula type, finished product pH, intended use area, rinse-off or leave-on format, and market regulations.

Solubility

Soluble in water, alcohol, and glycerin.

Texture / Appearance

Colorless to pale syrupy liquid.

pH / Testing Note

Finished formulas containing lactic acid must be checked with a properly calibrated pH meter or appropriate cosmetic pH testing method.

Do not guess the pH. Do not rely only on appearance, texture, or scent.

Compatibility

May be suitable for compatible cosmetic formulations such as:

• Lotions
• Creams
• Serums
• Emulsions
• Body care products
• Rinse-off products
• pH-adjusted cosmetic formulas

Finished formula compatibility depends on the full formula, pH, water phase, emulsifier system, preservative system, added ingredients, packaging, stability testing, and intended use.

How to Use

For formulation use only.

Wear appropriate protective equipment when handling. Weigh or measure accurately using suitable formulation tools. Add according to supplier guidance and formulation requirements.

Mix thoroughly and test the finished formula for pH, stability, preservation, appearance, scent, texture, and skin tolerance before use or sale.

Do not apply Lactic Acid 90% directly to the skin.

Storage Instructions

Store tightly closed in a cool, dry, well-ventilated place away from direct sunlight, heat, moisture, and incompatible materials.

Keep container closed when not in use. Avoid contamination. Use clean, dry tools when handling.

Keep away from children and pets.

Precautions

• For external cosmetic formulation use only
• Concentrated acid
• Not a finished skincare product
• Do not apply directly to skin
• Do not ingest
• Avoid contact with eyes
• Avoid inhalation of vapors or mist
• Wear appropriate protective gloves, eye protection, and protective clothing when handling
• Keep away from children and pets
• Use only with proper formulation knowledge
• Do not use undiluted
• Do not use as a home chemical peel
• Do not apply to broken, irritated, freshly shaved, freshly exfoliated, sunburned, or reactive skin
• Finished products must be properly diluted, pH-tested, stability-tested, and labeled
• AHA-containing finished products may increase sun sensitivity
• Finished products may require sun-sensitivity labeling and daytime sun protection directions
• Final product safety, pH, stability, preservation, labeling, and regulatory compliance are the responsibility of the formulator
• This product is not a drug or therapeutic product
• This product is not intended to diagnose, treat, cure, or prevent any disease
• This product is not intended to treat dry skin, rough skin, scaly skin, acne, discoloration, hyperpigmentation, scars, sun damage, or any skin condition
• This product is not intended to bleach, whiten, lighten, or change natural skin color

Important Safety Warning

Do not apply Lactic Acid 90% directly to skin. This is a concentrated acidic raw material and may cause serious irritation or injury if used incorrectly.

This product must be diluted and properly formulated before use in any cosmetic product.