Episode 333 - Should adults use baby beauty products?
The Beauty Brains
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Different Gel and Tretinoin Help With Anti Aging
If you're layering a serum and an SPF that have 2 thickeners in them that aren't compatible with each other, you could also get some interaction on the skin. Sometimes it has to do with product compatibility. If you had an emulsion that was very sensitive to the addition of citric acid or scorific acid, you can cause the emulsion to break. And I only know this because I've accidentally overshot my pH in the wrong direction. Some emulsifiers are very sensitive to that. But different gel is using something else, right?
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