Beta-hydroxy acids (BHAs) are popular chemical exfoliants. They differ from other exfoliants in their ability to penetrate deeply into pores to dislodge dead skin cells and impurities, thus helping to reduce blemishes.
The BHAs are oil-soluble and penetrate more deeply into pores, while AHAs are water-soluble and primarily act on the surface to remove dead skin cells.
Unlike most AHAs, BHAs are not photosensitizing and can be used in the morning.
How long does it take to see results with BHAs?
An improvement in skin texture and a reduction in blemishes typically become noticeable after 4 to 6 weeks of regular BHA use.
How often can one use BHAs?
It depends on the specific BHA-containing product. Some formulations can be used daily, while others should only be applied once a week.
Are BHAs suitable for oily skin?
Yes, their lipid solubility allows them to act deep within sebum-rich areas and helps limit pore blockage and imperfections. They are therefore particularly beneficial for oily skin.
Is it possible to use a BHA on sensitive skin?
Sensitive skin can react to exfoliating acids, including BHA. The use of low concentrations and a gradual introduction is generally recommended, while monitoring your skin’s tolerance. If redness or irritation occurs, it’s best to discontinue use.
Is BHA effective in reducing blackheads?
By penetrating into the pores, BHA helps dissolve the buildup of sebum and dead skin cells responsible for open comedones. It thus helps reduce the appearance of blackheads.
Can a BHA be combined with other active ingredients?
Yes, but some combinations, particularly with other exfoliants or retinoids, should be used with caution. The combination of BHA with hydrating or soothing actives is preferable and can even help improve skin tolerance.
Do BHAs have an effect on pigmentation spots?
By promoting exfoliation, BHAs can help gradually reduce pigmentation irregularities. However, this is not their primary intended use.
