Lab Notes
Ask a Chemist: What is L-ascorbic Acid? Are There Other Forms of Vitamin C in Skincare?
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Ask a Dermatologist: Can Retinoids, Vitamin C, Glycolic Acid and Peptides All be Used in the Same Routine?
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Ask a Dermatologist: Is a Serum Necessary if I Don’t Have Any Current Skincare Concerns?
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Ask a Dermatologist and a Chemist: Does a Serum Have a General “Shelf Life”? What Active Ingredients Tend to "Go Bad" or Lose Their Efficacy the Fastest?
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Ask a Dermatologist: Is there a Difference in Efficacy When Vitamins are Applied Topically vs. Taken Orally?
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Ask a Dermatologist and a Chemist: Should Retinoids be Applied Last in a Nighttime Skincare Routine?
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Ask a Dermatologist: Are There Any Ingredients You Would Consider “Essentials” in Most Skincare Routines?
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Ask a Dermatologist and a Chemist: Which Skincare Ingredients are Known to Cause Skin Irritation or Sensitivity?
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Ask a Dermatologist: Explain AHAs. What’s the Difference Between Glycolic Acid, Lactic Acid, Tartaric Acid and Malic Acid?
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