Characteristics
- INCI
- Sodium Metabisulfite
- CAS
-
7681-57-4, 7757-74-6
This is the substance number in the Chemical Abstracts Service registry. The CAS number uniquely identifies a substance regardless of language, trade name, or synonyms.
- EC
-
231-673-0
This is the substance number in the European chemical identification system (EC number), used in European regulatory databases including ECHA/CosIng.
- IUPAC
- Disodium Disulphite
- Functions
- antioxidant, preservative, reducing
- EU Restr.
-
III/99 V/9
EU regulatory status: restricted use. The ingredient is permitted in EU cosmetics but its use and labelling are regulated.
More detail →
Для кого подходит
Description
Sodium Metabisulfite is a sulfur-based antioxidant and preservative used in some skincare and haircare formulas. Its main job is to help keep products stable by slowing oxidation, which can protect sensitive ingredients from breaking down and help formulas stay fresh longer. You’ll most often see it in products where the formula itself needs extra protection, rather than as a star “treatment” ingredient for the skin.
For skin and hair, its benefit is mostly indirect: by helping preserve the formula, it supports the performance and shelf life of the product you’re using. It can be found in cleansers, masks, creams, hair dyes, and other formulations that may contain ingredients prone to oxidation. People who like well-preserved, stable products may appreciate it, especially in formulas with delicate actives or color-sensitive ingredients.
Caveat: Sodium Metabisulfite can be irritating for some people, particularly those with very sensitive skin or a known sulfite sensitivity. If a product stings, causes redness, or feels uncomfortable, it may not be a good fit. As with any ingredient, the overall formula and your personal tolerance matter more than the ingredient name alone.
Found in products (2 504 total)
Наиболее часто встречается в продукции Shiseido (140 продуктов)
