Topical with numerous "natural" ingredients...wort

[RSG]

Just wondering, would a toical with the following ingredients have any effect on DHT in the scalp?

Zinc
Rosemary
Silica
Colloidal Minerals
Biotin
Ginkgo biloba
Nettle
Cayenne
Sage
Selenium
Saw Palmetto

THe following product claims to have all the ingredients:
http://www.epharmacy.com.au/product.asp ... pray+125mL

Cheers