Questions from Patreon: Retin A, retinols, and retinoids (part one)

In the August Q&A on Patreon, Mildred asked: Question pls: Can I use a glycolic toner followed by a Retin A cream? I read a blog that these two needs to be used on alternate days but I can’t seem to find that writing any more. And Mercedes asked: I would like to know more about…

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