Home Cosmetic Science Talk Formulating Hair pH question

  • pH question

    Posted by francisa on January 25, 2022 at 5:17 pm

    What would be a safe pH range for a product specifically used on the scalp? 

    francisa replied 2 years, 3 months ago 2 Members · 4 Replies
  • 4 Replies
  • OldPerry

    Member
    January 25, 2022 at 5:22 pm

    That really depends on the exposure conditions (length of time, what else it’s paired with).  But hair conditioners might have a pH as low as 3.0.  Shampoos are around 4.5 - 6.0 or baby shampoos are around 7.0.  Hair relaxers go up to pH 12+ but you don’t want those to stay on your scalp for too long.

    So, it depends.

  • francisa

    Member
    January 25, 2022 at 5:28 pm

    Thank you for your response. It’s a scalp leave on spray. The ingredients listed below:

    Water
    aloe Vera powder
    glycerin
    disodium edta
    euxyl k903

    Sorbitan Oleate Decyl. Crosspolymer

    peppermint oil
    vitamin e

    saw palmetto extract
    horsetail extract
    neem extract
    kerascalp
    Baicapil 

  • OldPerry

    Member
    January 25, 2022 at 6:02 pm

    Well, that preservative works best with a pH of 5 or lower so try to keep it below 5.

  • francisa

    Member
    January 25, 2022 at 6:53 pm

    Okay thank you 

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