Questions from Patreon: Retin A, retinol, and retinoids (part two)

Last Thursday, we started looking at retin A, retinol, retinoids, Vitamin A, and carotenoids, so let’s resume that fascinating topic!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…

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