Alpha-hydroxy acids (AHAs) are naturally derived exfoliating agents renowned for their ability to improve skin texture and radiance. Learn more about these active ingredients, their action on cell renewal, and how they differ from BHAs and PHAs.
Which alpha-hydroxy acid (AHA) is the most effective?
The choice depends on your skin type and your concerns. The glycolic acid is often regarded as the most effective at exfoliating and improving skin texture, while the lactic acid offers a gentler exfoliation coupled with hydration.
Can AHAs be used in the morning?
AHAs can render the skin more photosensitive and should therefore be applied preferably in the evening. Sun protection is then indispensable the next day.
Can AHAs reduce wrinkles?
By stimulating cellular renewal, AHAs improve the skin’s appearance and can help diminish the signs of skin aging.
Are alpha-hydroxy acids (AHAs) suitable for sensitive skin?
Most AHAs are too irritating for sensitive skin. However, thanks to its high molecular weight, lactic acid is considered a gentle AHA suitable for use on sensitive skin.
Can AHAs be used daily?
Depending on their concentration, alpha-hydroxy acids (AHAs) can be used daily if the skin tolerates them well. However, it is advisable to begin with intermittent use to minimize irritation and assess skin tolerance.
Do AHAs lighten hyperpigmented spots?
AHAs can help reduce superficial spots by accelerating the removal of pigmented cells, but noticeable results require several weeks of regular use.
At what concentration are AHAs used in cosmetics?
In cosmetic formulations, concentrations typically range from 5% to 10%, depending on the active ingredients and the products. Beyond that threshold, they are usually professional aesthetic treatments performed in beauty spas or dermatology clinics.
Which alpha-hydroxy acids (AHAs) are the most common?
Glycolic acid, lactic acid, mandelic acid, and citric acid are among the most commonly used AHAs.
Are AHAs suitable for dry skin?
It depends on the AHAs. Lactic acid, for example, which also has humectant properties, can be beneficial for exfoliating dry skin.
Can alpha-hydroxy acids be used in combination with retinoids?
Combining AHAs and retinoids is generally not recommended, as this combination can prove too irritating for the skin.
