글라이콜릭애씨드

Glycolic Acid is generally safe when used correctly in formulations at appropriate concentrations. It should be neutralized properly after peels to avoid over-acidification and skin irritation. Overuse or use at high concentrations without professional guidance can cause redness, dryness, or sensitivity. It is recommended to start with lower concentrations and gradually increase use. Protective measures against sun exposure are advised due to increased photosensitivity after use

Glycolic Acid is a small-molecule alpha hydroxy acid (AHA) that penetrates the skin easily. At low concentrations (2-5%), it acts by weakening the bonds between corneocytes (skin cells in the outermost layer), specifically targeting the corneodesmosomes, thereby facilitating desquamation or shedding of the outer layers of the stratum corneum. This results in skin surface renewal without disrupting deeper skin layers or the skin barrier. Glycolic Acid also has keratolytic, anti-inflammatory, antioxidant properties and can stimulate collagen and hyaluronic acid production, improving skin texture, reducing pigmentation, and promoting anti-aging effects. The intensity of exfoliation depends on its concentration, pH, and application duration.

【Restrictions】 Field of application and/or use : (a) Skin products (i) For general use (ii) For professional use (iii) For use by a qualified medical practitioner (b) Other products 【Restrictions】 Maximum authorised concentration in the finished cosmetic product : (a) Skin products (i) ≤ 10% total when calculated as the acids (ii) > 10% - 20% total when calculated as the acids (iii) > 20%, total when calculated as the acids (b) Other products None 【Restrictions】 Other limitations and requirements : (a) Skin products (i) Final formulation ≥ pH 3.5 (ii) Final formulation ≥ pH 3.0 For professional use only (iii) Final formulation ≥ pH 3.0 for products up to 30% total when calculated as the acids. For use by a qualified medical practitioner only. (b) Other products None Conditions of use and warning which must be printed on the labels : (a) Skin products All Sunburn alert: This product contains an alpha hydroxy acid (AHA) that may increase your skin’s sensitivity to the sun and particularly the possibility of sunburn. Use a sunscreen, wear sun protective clothing, and limit sun exposure while using this product and for a week afterwards(13) (ii) For professional use only (iii) For use by a qualified medical practitioner only. (b) Other products None

<Alpha-hydroxy acids, including polyhydroxy acids and bionic acids with alpha hydroxyl groups, and their salts Glycolic Acid> 【Restrictions】 Conditions of Use by product type : (a) Products for use on the skin for consumer use. Manufacturer or importer to provide pH levels. (b) Products for use on the skin for professional use: Manufacturer must provide Health Canada with evidence of safety including: 1. pH levels 2. AHA concentrations 3. Directions for use 4. Clinical studies demonstrating minimal skin irritation (c) Products intended to be diluted in bath water may contain levels of AHAs exceeding 10% (d) Other cosmetics (e) Any cosmetics 【Restrictions】 Maximum Concentration Permitted : (a) Between 3% and 18% total mono-AHA equivalents with a pH equal to or greater than 3.5 (b) Between 18% and 30% total mono-AHA equivalents and/or a pH between 3.0 to 3.5 (d) Between 3% and 30% total mono-AHA equivalents with a pH equal to or greater than 3.0 (e) 3% 【Restrictions】 Warnings and Cautionary Statements: (to the effect of) : (a) and (b) : "Use only as directed", "Avoid contact with the eyes", "If irritation persists, discontinue use and consult a physician", "It is recommended that prior to exposure to the sun, users cover areas where AHAs have been applied with sunscreen" Product labels should contain appropriate directions regarding frequency and/or duration of use. (b only) "For professional use only" (d) "Use only as directed", "Avoid contact with eyes", "Discontinue use if rash or irritation occurs" 【Restrictions】 Conditions of Use by product type : See "Alpha-hydroxy acids".