Beta hydroxy acids (BHAs) are popular chemical exfoliants. They differ from other exfoliants in their ability to penetrate deeply into the pores to dislodge dead skin cells and impurities, thereby helping to reduce imperfections.
Unlike most AHAs, the BHAs are not photosensitising and can be used in the morning.
How long does it typically take to observe results with BHAs?
An improvement in skin texture and a reduction in imperfections are generally observed after 4 to 6 weeks of regular BHA use.
How frequently can BHAs be used?
The frequency of use varies depending on the formulation containing BHA. Some are suitable for daily application, while others should only be used once a week.
Are BHAs suitable for oily skin?
Yes, their lipophilicity enables them to act at the core of sebum-rich zones, helping to reduce pore occlusion and skin imperfections. They are therefore particularly beneficial for oily skin.
Can one use a BHA on sensitive skin?
Sensitive skin may react to exfoliating acids, including BHA. The use of low concentrations combined with a gradual introduction is generally recommended, whilst monitoring the skin’s tolerance. If redness or irritation occurs, it is best to discontinue use.
Does BHA help reduce blackheads?
By penetrating the pores, BHA helps to dissolve accumulations of sebum and dead skin cells responsible for open comedones. It thus contributes to reducing the appearance of blackheads.
Is it possible to combine a BHA with other active ingredients?
Yes, but certain combinations, particularly with other exfoliants or retinoids, should be used with caution. The combination of BHA with moisturising or soothing actives is preferable and may even help to improve skin tolerance.
Do BHAs have an effect on pigmented spots?
By promoting exfoliation, BHAs can help to gradually reduce uneven pigmentation. However, this is not their primary use.
