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Skincare guides
Practical skincare guides based on published research, with clear explanations of what the evidence can and cannot tell us.
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The guide library
Acne Treatment Basics
AAD recommends benzoyl peroxide and topical retinoids for acne. FDA labeling explains OTC benzoyl-peroxide strengths, irritation, and safer pacing.
AHA Exfoliation Basics
FDA guidance identifies glycolic and lactic acid as common cosmetic AHAs and focuses on short-term sun-sensitivity evidence and label precautions.
Gentle Facial Cleansing: Evidence and Limits
Gentle cleansing is defined as much by technique as by the bottle: use a mild cleanser, lukewarm water, fingertips, and no scrubbing.
Moisturizers and Atopic Dermatitis
Adult atopic-dermatitis guidelines strongly recommend moisturizers; small trials suggest a modest SCORAD difference for ceramide formulas, with major limits.
Understanding Sunscreen Labels and Use
Read sunscreen labels with confidence: SPF reflects UVB sunburn protection, broad spectrum adds UVA coverage, and directions govern use.