Cystine
Cystine is a cosmetic ingredient used as an antistatic, hair conditioning agent. It is used in 35 products in our dataset. It carries no restriction under the EU Cosmetics Regulation annexes. PubMed carries 388 studies of its skin or topical use.
| INCI name | CYSTINE |
| Function | ANTISTATIC, HAIR CONDITIONING, FRAGRANCE |
| CAS number | 56-89-3 |
| EC number | 200-296-3 |
| Prevalence | 35 products (0.04% of dataset) |
| Most used in | Haircare |
| EU status | No annex restriction |
| Scientific studies | 388 on PubMed (skin/cosmetic/topical) |
| Monthly searches | 4,400 |
Used in
Body Lotions 25.7%Hair Masks 11.4%Conditioners 8.6%Day Moisturizers 8.6%Serums 8.6%Hair Oils 5.7%
Frequently asked
- What does Cystine do in skincare?
- Cystine functions as an antistatic, hair conditioning agent in cosmetic formulas.
- What products contain Cystine?
- It is most commonly found in Haircare products, especially body lotions (25.7% of its uses).
Manufacturers with experience using Cystine
Match with vetted US contract manufacturers that have hands-on experience formulating with this ingredient.