• Formulating

  How much time does AHA need to exfoliate the skin?

  Posted by Abdullah on September 1, 2021 at 10:16 am

  How much time does 5-10% AHA like lactic acid at pH 3.8-4 needs to do it’s exfoliation job? 

  ngarayeva001 replied 3 years, 3 months ago 3 Members · 6 Replies

  • aha
  • exfoliation
  • lactic acid
• 6 Replies

• 

  Abdullah

  Member

  September 1, 2021 at 10:17 am

  Does it do it in 

  Seconds

  Minutes

  Or hours? 
• 

  chemicalmatt

  Member

  September 3, 2021 at 1:12 pm

  @Abdullah at that level & pH I always guess “until it hurts”   but seriously, perhaps 30 - 40 minutes.  At pH 6.0, several hours.

• 

  Abdullah

  Member

  September 4, 2021 at 3:55 am

  @chemicalmatt thanks 

  So does it means if i apply a moisturizer instantly after lactic acid exfoliant it will reduce the effectiveness of exfoliant because it will increase the pH? 

• 

  ngarayeva001

  Member

  September 4, 2021 at 10:55 pm

  There are leave on peels with 10% lactic or glycolic acid. I have not checked pH of those drug store peels but I use 10% glycolic with pH 3.3-3.4 overnight and my face hasn’t fallen off yet not every day.

• 

  Abdullah

  Member

  September 5, 2021 at 2:44 am

  @ngarayeva001 do you apply anything else on top of exfoliant? 

• 

  ngarayeva001

  Member

  September 7, 2021 at 10:04 pm

  Usually no.

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