Home Cosmetic Science Talk Formulating formulating with Zinc PCA

  • formulating with Zinc PCA

    Posted by esthetician922 on July 2, 2020 at 4:34 pm

    What are your thoughts on this ingredient. Claims are for acne and redness. Any proof in efficacy? At what percentage is it typically used at. 

    esthetician922 replied 3 years, 10 months ago 1 Member · 0 Replies
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