{"title":"Alpha Hydroxy Acids","entity_type":"Source","slug":"fda-alpha-hydroxy-acids-photosensitivity","canonical_url":"https://skinknowledgebase.com/sources/fda-alpha-hydroxy-acids-photosensitivity","dates":{"date_modified":"2026-05-27","date_reviewed":"2026-05-27"},"mcp_eligible":true,"summary":"FDA alpha hydroxy acid guidance supports photosensitivity and sunscreen caution language for exfoliating-acid routines. It helps keep public guidance specific,","evidence_sources":[],"product_fact_sources":[],"related_entities":[{"title":"Can exfoliating acids make skin more sun sensitive?","url":"https://skinknowledgebase.com/questions/can-exfoliating-acids-make-skin-more-sun-sensitive"},{"title":"Are PHAs better than AHAs for sensitive skin?","url":"https://skinknowledgebase.com/questions/are-phas-better-than-ahas-for-sensitive-skin"}],"body_sections":[{"heading":"Quick Summary","paragraphs":["FDA alpha hydroxy acid guidance supports photosensitivity and sunscreen caution language for exfoliating-acid routines."]},{"heading":"What Studied","paragraphs":["This source is used for conservative skincare education, ingredient mechanisms, reaction-pattern boundaries, or clinician-referral language."]},{"heading":"Main Findings","paragraphs":["The source supports practical, cautious wording and does not justify cure claims or overconfident product promises."]},{"heading":"Why It Matters","paragraphs":["It anchors the page in a more reliable reference than marketing copy or thin SEO summaries.","Original Source — Alpha Hydroxy Acids. https://www.fda.gov/cosmetics/cosmetic-ingredients/alpha-hydroxy-acids (rel=\"nofollow\")"]}],"source_type":"regulatory","original_source_url":"https://www.fda.gov/cosmetics/cosmetic-ingredients/alpha-hydroxy-acids"}