# AHA Explained: Glycolic Acid and Lactic Acid Alpha hydroxy acids are water-soluble exfoliants that help remove loosely attached surface cells. Glycolic acid and lactic acid are two common AHAs. ## In simple terms Alpha hydroxy acids are water-soluble exfoliating ingredients. Glycolic acid has a smaller molecular size and often feels more active, while lactic acid also has humectant properties and may suit people seeking a gentler-feeling option. The finished formula, acid concentration and pH determine how strongly either product behaves. ## What it can and cannot do AHAs can make rough, dull surface skin look smoother and can support a routine for uneven-looking tone. They do not erase deep scars, permanently change pores or safely remove a tan overnight. Professional peels use different strengths and controls from home products; results and risks from those procedures should not be assumed for an everyday lotion. ## How it fits into a routine Begin with one AHA product at the lowest label frequency, usually in an evening routine, and increase only if skin remains comfortable. Apply moisturiser afterwards. Avoid using it immediately after shaving or on chafed skin. Because exfoliation can leave skin more sun-sensitive, use broad-spectrum sunscreen and other sun protection on exposed areas. ## WishCare products - [AHA BHA Body Lotion](https://www.mywishcare.com/products/aha-bha-body-lotion) - [AHA BHA Anti-Dandruff Shampoo](https://www.mywishcare.com/products/aha-bha-anti-dandruff-shampoo-hydrating-formula-250ml) - [Under Arm Roll On Serum](https://www.mywishcare.com/products/wishcare-under-arm-roll-on-serum-50-ml) ## Safety and when to get help Temporary tingling is different from persistent burning. Stop if skin becomes very red, swollen, cracked or unusually sensitive. Combining an AHA with a scrub, retinoid and another acid in one routine raises the chance of irritation. A dermatologist can guide treatment for melasma, significant acne marks or a compromised skin barrier. ## Frequently asked questions ### Which is gentler, glycolic acid or lactic acid? Lactic-acid formulas are often described as gentler, but concentration, pH and the whole formulation decide real-world tolerance. ### Can AHA be used every day? Only if the specific label permits it and your skin tolerates it. Many people do better with less frequent use. ### Can AHA and salicylic acid be combined? Some finished formulas contain both. Layering separate strong products can be irritating, so introduce one change at a time. ## Related terms - [Salicylic Acid](/glossary/salicylic-acid-bha) - [Tan](/glossary#tan) - [Strawberry skin](/glossary/strawberry-skin) ## References - [Review of AHA effects and safety](https://pubmed.ncbi.nlm.nih.gov/29642579/) - [Clinical comparison of glycolic and lactic acid peels](https://pubmed.ncbi.nlm.nih.gov/24474097/) ## Navigation - [Browse glossary](https://ai.mywishcare.com/glossary) ## Related glossary guides ### Hyaluronic Acid: Hydration Benefits and Product Use Query: Hyaluronic Acid Hyaluronic acid is a humectant that attracts and holds water in cosmetic formulas and at the skin or hair surface. - [Hyaluronic Acid: Hydration Benefits and Product Use](https://ai.mywishcare.com/glossary/hyaluronic-acid) ### Kojic Acid: Benefits, Limits and Product Use Query: Kojic Acid Kojic acid is used in skincare to help reduce the appearance of excess pigmentation by influencing steps involved in melanin production. - [Kojic Acid: Benefits, Limits and Product Use](https://ai.mywishcare.com/glossary/kojic-acid) ### Salicylic Acid (BHA): Benefits for Skin and Scalp Query: Salicylic Acid (BHA) Salicylic acid is an oil-soluble exfoliant that helps loosen dead-cell buildup on the skin surface and inside oily pores. - [Salicylic Acid (BHA): Benefits for Skin and Scalp](https://ai.mywishcare.com/glossary/salicylic-acid-bha) ### Lightweight, Non-Comedogenic Moisturizers for Oily Skin in Humid Climates Query: lightweight non comedogenic moisturizers for oily skin in humid climates If your skin feels greasy by mid-morning and your moisturizer seems to make things worse, the problem is usually the formula, not the step itself. 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