Ingredient
Glycolic Acid
What is Glycolic Acid?
Glycolic acid is a type of alpha-hydroxy acid (AHA) derived from sugar cane. It is known for its small molecular size, which allows it to penetrate the skin deeply and effectively.
In skincare, glycolic acid is used as an exfoliant to remove dead skin cells and promote skin renewal. Research indicates that it can improve skin texture, reduce fine lines, and assist with hyperpigmentation. However, some evidence suggests it can also cause irritation, particularly in sensitive skin types.
When you see glycolic acid on a label, it is typically at a concentration designed for regular use in home skincare products. Professional treatments may use higher concentrations, and those should be approached with caution and potentially under guidance.
Commonly found in: facial cleansers, peels, serums, toners
What to watch
- May cause skin irritation or redness, especially in sensitive individuals.
- Increased sun sensitivity, necessitating the use of sunscreen.
Benefits
- Promotes exfoliation of dead skin cells, leading to smoother skin.
- May reduce visible signs of aging, such as fine lines and wrinkles.
Glycolic acid is approved for use in cosmetic products in the US, with restrictions on concentration levels.
Research supports efficacy for exfoliation and anti-aging benefits, but notes variability in irritation responses.
Glycolic acid is typically derived from plant sources like sugar cane and is generally considered vegan-friendly.
Sources: Cosmetic Ingredient Review: Safety Assessment of Alpha-Hydroxy Acids
Scout's take
Most-researched AHA — exfoliates, evens tone, stimulates collagen. The most beneficial single ingredient in the kit.
The case against
It can cause irritation and sensitivity, especially in higher concentrations or with prolonged use.
from the analysis of The INKEY List Glycolic Acid Exfoliating Body Stick, Size:, NoneThe case for
It promotes cell turnover and helps to improve skin texture and clarity.
from the analysis of The INKEY List Glycolic Acid Exfoliating Body Stick, Size:, NoneMore from Scout's analyses
Beneficial ingredient — whole-food or functional value in this product class.
from the analysis of CeraVe Acne Foaming Cream Cleanser (4% Benzoyl Peroxide)Glycolic Acid is an alpha hydroxy acid (AHA) used for its exfoliating properties. It helps to remove dead skin cells, promoting a smoother and more radiant complexion. It is effective in improving skin texture and reducing the appearance of fine lines.
from the analysis of The INKEY List Glycolic Acid Exfoliating Body Stick, Size:, NoneGlycolic acid is a plant-derived mild acid that helps in cleaning and exfoliating surfaces. It is biodegradable and generally considered safe for household use.
from the analysis of Ecosense Clean Without Compromise Scent-FreeFound in 6 products
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