EU Fragrance Allergens in Cosmetics: 2026 Labeling Rules
Learn the EU fragrance allergen labeling rules, declaration thresholds and the 2026 and 2028 transition deadlines for cosmetic products.
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Research and guidance
EU Cosmetic Ingredient Blog and Compliance Guides
Read practical articles about EU cosmetic ingredients, Annex II–VI restrictions, warnings, preservatives, UV filters, colorants, compliance topics and ingredient research.
Latest posts
Articles, explainers and updates related to cosmetic ingredients and EU reference data.
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COSING Database Explained
Learn everything about cosing database, understand EU cosmetic regulations, ingredient functions, safety and practical examples.
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CoSing Database and INCI Ingredient Checker: How to Search Cosmetic Ingredients in the EU
Learn how to use the CoSing database, check INCI names, cosmetic ingredient functions, EU restrictions, Annex entries, colorants, preservatives and UV filters …
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Alcohols in Cosmetics: Types, Functions, and Safety
Learn how different types of alcohols in cosmetics work, their benefits, risks, and how to choose safe skincare products. Understand simple, polyhydric, fatty,…
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Basic Skincare Rules: 10 Steps to Healthy Skin
Discover the top skin care tips that help keep your skin healthy, glowing, and protected every day. Learn 10 essential rules to build an effective skincare rou…
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Safe Cosmetics During Pregnancy – What Ingredients to Avoid (EU Guide)
Learn which cosmetic ingredients are safe during pregnancy and which to avoid. EU-based guide covering retinol, caffeine, hair dyes, and skincare safety for pr…
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Preservatives in Cosmetics: Critical and Safe
Learn about cosmetic preservatives, including safe and harmful ingredients, parabens, and how they affect your skin. Understand risks, benefits, and safety reg…
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Shedding Light on Sun Safety - Part Two
Learn the difference between chemical and physical sunscreens and whether oxybenzone is safe. Understand UV filters, skin reactions, and how to choose the best…
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Benzene in Cosmetics: Safety, EU Ban & CosIng
Benzene safety, EU CosIng status, and Annex II ban. Learn risks, regulations, and limits in cosmetics.
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About this blog
The CosIng Checker blog covers practical topics related to EU cosmetic ingredient compliance and the CosIng reference database. Articles are written for formulators, regulatory affairs professionals and anyone working with EU cosmetics data.
- Prohibited substances — Annex II bans, ingredient screening and compliance checks
- Restricted substances — Annex III concentration limits, warnings and product-type conditions
- Permitted colorants, preservatives and UV filters — Annex IV, V and VI practical guides
- EU fragrance allergen declaration rules under Regulation 1223/2009
- CAS and EC number cross-referencing across multiple annexes
- How to read and interpret CosIng database fields and records