Exfoliant
Exfoliant — a product or ingredient that helps remove dead cells from the skin's surface, either by dissolving the bonds between them or by physically sloughing them away. Exfoliants are used to smooth texture, brighten dull skin, and support cell turnover, and they fall into chemical, physical, and enzymatic categories.
Key points
- Exfoliants work either by loosening the desmosome bonds that hold surface cells together or by mechanical abrasion.
- Common chemical exfoliants include alpha hydroxy acids, beta hydroxy acids, and polyhydroxy acids.
- Over-exfoliation can compromise the skin barrier, leading to redness, stinging, and increased sensitivity.
- Regular exfoliation can improve the penetration and apparent efficacy of other topical products by clearing surface buildup.
Frequently asked
How often should exfoliants be used?
Frequency depends on the exfoliant's strength and your skin's tolerance, but many people start with one to three times per week and adjust based on how their skin responds. Educational only, not medical advice.
Are chemical or physical exfoliants better?
Neither is universally better; chemical exfoliants offer more uniform action while physical exfoliants give immediate smoothness, and the right choice depends on skin type and preference.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
