| Regulatory reference: | Proprietary method |
| Claim: | Sebum-regulator and Anti-hair loss |
| Application field: | Active ingredients or finished products. |
| Description of the test: | Analysis of the in vitro expression of the 5α-reductase enzyme by real time PCR in comparison with untreated substrates for the evaluation of inhibition effects. Demonstration of the efficacy of the ingredient or finished product in reducing the expression of mRNA codifying for 5α-reductase type I or II. |