Lab Muffin Beauty Science | Don't mix tretinoin into body cream @LabMuffinBeautyScience | Uploaded February 2023 | Updated October 2024, 1 hour ago.
🙋🏻 I'm Michelle, a chemistry PhD, cosmetic chemist and science educator, here to explain how beauty products work, debunk myths, and help you make smarter decisions about your skincare, hair and makeup!

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