Can you use AHA BHA after exfoliating? Yes, you can use both AHA and BHA together, as long as they are coming from the same product. Products that have both AHA and BHA in their formula usually contain a balanced percentage that is generally safe for all skin types and with low risk of over exfoliation.
How often should you exfoliate AHA BHA? How often you should exfoliate depends on your skin type and skin concerns. Some people do well exfoliating with AHA or BHA twice a day, whereas others find that once a day or every other day is a perfect balance.
How long should you wait between exfoliating? Leave-on acids (follow instructions or wait 20 minutes)
However, if your chosen acid product doesn’t explicitly state how long it should be left for, Dr Mansouri says it’s better to be safe than sorry. “I recommend waiting 20-30 minutes to ensure the skin is dry and to minimise inadvertent interactions,” she says.
How long should you wait after applying BHA? BHAs are thought to self-neutralize after about 20 minutes, so most skincare experts advise letting it fully dry for at least 15 minutes before continuing with your regular skincare routine (i.e. essences, serums, moisturizers, spot treatments).