1. Clinical & Scientific Overview
Glycolic Acid (Cosmetic AHA) (TIP-MED-000610, Reference Code [COS-06]) is classified under
Cosmetics & Cosmeceutical Ingredients (Cosmetics Rules, 2020) as a Cosmetic Science & Dermopharmaceutics • Alpha-Hydroxy Acid (AHA) Corneodesmosomal Exfoliant.
Within the Indian regulatory and compendial framework, it is governed under Cosmetic AHA when <=10% and pH >=3.5 under Cosmetics Rules, 2020; clinical chemical peels (20%–70%) are medical aesthetic procedures..
INCI Standard: Glycolic Acid (IS 4707 / Cosmetics Rules, 2020 Compliant)
Cosmetic home care: 4% to 10% (buffered to pH >=3.5)
Dermopharmaceutics, INCI Formulation & Cosmetics Rules 2020 Compliance
Glycolic AcidAlpha-Hydroxy Acid (AHA) Corneodesmosomal Exfoliant
Cosmetic home care: 4% to 10% (buffered to pH >=3.5)
Irritation, Sensitisation & Photoprotection Considerations: FDA/CDSCO SUNBURN ALERT: Glycolic acid thins the stratum corneum and increases UV-induced erythema and DNA cyclobutane pyrimidine dimer formation by up to 18% — requires mandatory daily broad-spectrum sunscreen during use and for 7 days after stopping; causes chemical burns if unbuffered (pH <3.0) or applied to darker Fitzpatrick IV–VI skin without caution (risk of post-inflammatory hyperpigmentation).
Chemical Stability & Formulation Incompatibilities: Free acid value depends strictly on pH (pKa = 3.83); must not be layered simultaneously in the same routine with retinoids, benzoyl peroxide, or physical scrubs.
Statutory Cosmetic vs Drug Distinction (Cosmetics Rules, 2020 & BIS IS 4707): Cosmetic AHA when <=10% and pH >=3.5 under Cosmetics Rules, 2020; clinical chemical peels (20%–70%) are medical aesthetic procedures.
3. Mechanism of Action & Pharmacodynamics
Smallest alpha-hydroxy acid (MW 76.05 Da), enabling rapid hydrophilic penetration into the stratum corneum where it chelates calcium ions from cadherin-dependent corneodesmosomes, promoting controlled desquamation of superficial corneocytes.
4. Therapeutic Indications & Evidence-Supported Uses
- Surface exfoliation for rough, photodamaged, or hyperkeratotic skin texture
🇮🇳 Jurisdiction & Indication Note: Indications and schedules reflect Indian compendial and regulatory records (CDSCO / Indian Pharmacopoeia & NFI / NLEM 2022). Where international reference labels (US FDA DailyMed / NCBI StatPearls) are cited for pharmacokinetic or mechanistic parameters, international approvals do not automatically imply CDSCO approval in India.
5. Educational Dosage Context, Formulations & Administration
Educational Dosing & Regimen Summary: Cosmetic Formulation Concentration & pH Window: Cosmetic home care: 4% to 10% (buffered to pH >=3.5)
Administration & Meal Timing: External topical use only (Cosmetic home care: 4% to 10% (buffered to pH >=3.5)). Free acid value depends strictly on pH (pKa = 3.83); must not be layered simultaneously in the same routine with retinoids, benzoyl peroxide, or physical scrubs.
6. Pharmacokinetics, Metabolism & Renal/Hepatic Adjustment
Stratum corneum partitioning and epidermal retention governed by molecular weight (<500 Da rule), logP, and formulation pH; cosmetic ingredients are formulated for local epidermal/corneocyte conditioning without systemic pharmacological action.
Local epidermal enzymatic hydrolysis or oxidation where applicable (e.g., esterases for retinyl/tocopheryl esters).
Not applicable (topical cosmetic ingredient with negligible systemic exposure when used on intact skin).
Not applicable (topical external cosmetic use).
7. Contraindications, Precautions & High-Risk Warnings
- Known allergic contact dermatitis or hypersensitivity to Glycolic Acid
- Application to open wounds, abraded skin, or acute infectious dermatoses
- FDA/CDSCO SUNBURN ALERT: Glycolic acid thins the stratum corneum and increases UV-induced erythema and DNA cyclobutane pyrimidine dimer formation by up to 18% — requires mandatory daily broad-spectrum sunscreen during use and for 7 days after stopping; causes chemical burns if unbuffered (pH <3.0) or applied to darker Fitzpatrick IV–VI skin without caution (risk of post-inflammatory hyperpigmentation).
Key Clinical Precautions: FDA/CDSCO SUNBURN ALERT: Glycolic acid thins the stratum corneum and increases UV-induced erythema and DNA cyclobutane pyrimidine dimer formation by up to 18% — requires mandatory daily broad-spectrum sunscreen during use and for 7 days after stopping; causes chemical burns if unbuffered (pH <3.0) or applied to darker Fitzpatrick IV–VI skin without caution (risk of post-inflammatory hyperpigmentation).
8. Adverse Effects Profile
- FDA/CDSCO SUNBURN ALERT: Glycolic acid thins the stratum corneum and increases UV-induced erythema and DNA cyclobutane pyrimidine dimer formation by up to 18% — requires mandatory daily broad-spectrum sunscreen during use and for 7 days after stopping; causes chemical burns if unbuffered (pH <3.0) or applied to darker Fitzpatrick IV–VI skin without caution (risk of post-inflammatory hyperpigmentation).
- FDA/CDSCO SUNBURN ALERT: Glycolic acid thins the stratum corneum and increases UV-induced erythema and DNA cyclobutane pyrimidine dimer formation by up to 18% — requires mandatory daily broad-spectrum sunscreen during use and for 7 days after stopping; causes chemical burns if unbuffered (pH <3.0) or applied to darker Fitzpatrick IV–VI skin without caution (risk of post-inflammatory hyperpigmentation).
9. Major Drug–Drug, Drug–Food & Drug–Herb Interactions
- Free acid value depends strictly on pH (pKa = 3.83); must not be layered simultaneously in the same routine with retinoids, benzoyl peroxide, or physical scrubs.
10. Clinical Monitoring, Patient Counselling & Storage
Clinical & Laboratory Monitoring: Formulation Stability & Compatibility Check: Free acid value depends strictly on pH (pKa = 3.83); must not be layered simultaneously in the same routine with retinoids, benzoyl peroxide, or physical scrubs.
Pharmacist Patient Counselling Points:
- Perform a 24–48 hour forearm patch test before introducing a new active cosmeceutical onto facial skin.
- Apply broad-spectrum SPF 30+ PA+++ sunscreen every morning, especially when using AHAs, BHAs, retinol, or brightening actives.
- Cosmetic products clean, condition, or protect superficial skin appearance; persistent acne, melasma, rosacea, or eczema requires medical dermatology evaluation.
Storage, Stability & Dispensing Safeguards: Free acid value depends strictly on pH (pKa = 3.83); must not be layered simultaneously in the same routine with retinoids, benzoyl peroxide, or physical scrubs.
11. Visual Pharmacology & Mechanism Diagram (svg-v339-01-adme-12-step-journey)
12. Authoritative References, Regulatory Sources & Editorial Disclaimer
Primary Compendial & Guideline Reference: Cosmetics Rules, 2020 (CDSCO, Ministry of Health & Family Welfare, Govt. of India); Bureau of Indian Standards (BIS) IS 4707 (Part 1 & Part 2) Classification of Cosmetic Raw Materials and Adjuncts.
Official Verification Portals: CDSCO — Cosmetics Division & Cosmetics Rules, 2020 • Bureau of Indian Standards (BIS) — IS 4707 Cosmetic Standards
Last Medically & Pharmaceutically Reviewed: 2026-11-10 • Verification Status: VERIFIED_EDUCATIONAL_CONTENT
Educational & Clinical Disclaimer: This reference profile is published solely for pharmacy education, academic study, and professional clinical reference. It does not substitute for patient-specific clinical judgement, qualified specialist oncology/medical supervision, or official CDSCO/IP prescribing information. Never self-medicate with prescription, Schedule H/H1/X, NDPS, or oncology medicines.
13. Related Reference Monographs, Educational Guides & Visual Concept
💊 Related Pharmacological / Category Profiles
- [COS-03] Retinol (Cosmetic All-Trans-Retinol) — Cosmetic Science & Dermopharmaceutics • Cosmetic Skin-Conditionin
- [COS-04] L-Ascorbic Acid (Topical Vitamin C) — Cosmetic Science & Dermopharmaceutics • Antioxidant, Photoprotect
- [COS-05] Salicylic Acid (Cosmetic BHA 0.5%–2.0%) — Cosmetic Science & Dermopharmaceutics • Lipophilic Keratolytic, C
- [COS-07] Lactic Acid (Cosmetic AHA & NMF Component) — Cosmetic Science & Dermopharmaceutics • Alpha-Hydroxy Acid Exfoli
