{"title":"Medik8 Crystal Retinal","entity_type":"Product","slug":"medik8-crystal-retinal","canonical_url":"https://skinknowledgebase.com/products/medik8-crystal-retinal","dates":{"date_modified":"2026-05-18","date_reviewed":"2026-05-18"},"mcp_eligible":true,"evidence_sources":[{"title":"AAD — Retinoid or retinol?","canonical_citation_url":"https://skinknowledgebase.com/sources/aad-retinoid-or-retinol","original_source_url":"https://www.aad.org/public/everyday-care/skin-care-secrets/anti-aging/retinoid-retinol","source_type":"dermatology_reference"},{"title":"DermNet NZ — Topical retinoids","canonical_citation_url":"https://skinknowledgebase.com/sources/dermnet-topical-retinoids","original_source_url":"https://dermnetnz.org/topics/topical-retinoids","source_type":"medical_reference"}],"product_fact_sources":[{"title":"Official Product Page — Medik8 Crystal Retinal","canonical_citation_url":"https://skinknowledgebase.com/sources/official-product-page-medik8-crystal-retinal","original_source_url":"https://us.medik8.com/products/crystal-retinal","source_type":"official_product_page"}],"related_entities":[{"title":"AAD — Retinoid or retinol?","url":"https://skinknowledgebase.com/sources/aad-retinoid-or-retinol"},{"title":"DermNet NZ — Topical retinoids","url":"https://skinknowledgebase.com/sources/dermnet-topical-retinoids"},{"title":"Official Product Page — Medik8 Crystal Retinal","url":"https://skinknowledgebase.com/sources/official-product-page-medik8-crystal-retinal"},{"title":"Wrinkles","url":"https://skinknowledgebase.com/concerns/wrinkles"},{"title":"Fine Lines","url":"https://skinknowledgebase.com/concerns/fine-lines"},{"title":"Loss of Firmness","url":"https://skinknowledgebase.com/concerns/loss-of-firmness"},{"title":"Expression Lines","url":"https://skinknowledgebase.com/concerns/expression-lines"},{"title":"Retinaldehyde","url":"https://skinknowledgebase.com/ingredients/retinaldehyde"},{"title":"Hyaluronic Acid","url":"https://skinknowledgebase.com/ingredients/hyaluronic-acid"},{"title":"Vitamin E","url":"https://skinknowledgebase.com/ingredients/vitamin-e"},{"title":"Is Medik8 Crystal Retinal any good?","url":"https://skinknowledgebase.com/questions/is-medik8-crystal-retinal-any-good"}],"body_sections":[{"heading":"Quick Summary","paragraphs":["Medik8 Crystal Retinal is a retinaldehyde night serum line with retinal, sodium hyaluronate, vitamin E, glycerin, squalane, and several strength options."]},{"heading":"Compact Product Facts","paragraphs":["- Brand: Medik8\n- Product line: Crystal Retinal\n- Full product name: Medik8 Crystal Retinal\n- Cost: {\"currency\":\"USD\",\"checked_at\":\"2026-05-18\",\"single_unit\":67,\"multi_pack_2\":0}\n- Retail URL: https://us.medik8.com/products/crystal-retinal"]},{"heading":"Factual Description","paragraphs":["The official page identifies Crystal Retinal as a retinal age-defying night serum line. The Medik8 product page and retail context list about $67–$100 for 30 ml depending on strength and retailer. Brand-page INCI context includes retinal, sodium hyaluronate, tocopheryl acetate, glycerin, squalane, caprylic/capric triglyceride, 3-O-ethyl ascorbic acid, tetrahexyldecyl ascorbate, carrot seed oil, cloudberry seed oil, honeysuckle flower extracts, and pigment or colorant components depending on strength."]}],"main_concern":{"title":"Wrinkles","url":"https://skinknowledgebase.com/concerns/wrinkles"},"key_ingredients":[{"title":"Retinaldehyde","url":"https://skinknowledgebase.com/ingredients/retinaldehyde"},{"title":"Hyaluronic Acid","url":"https://skinknowledgebase.com/ingredients/hyaluronic-acid"},{"title":"Vitamin E","url":"https://skinknowledgebase.com/ingredients/vitamin-e"}],"cost":{"currency":"USD","checked_at":"2026-05-18","single_unit":67,"multi_pack_2":0},"retail_url":"https://us.medik8.com/products/crystal-retinal"}