A high grade purified cosmetic alcohol that evaporates instantly. It is used to transport ingredients to the skin and then leave them there. It may help to kill bacteria and it is considered gentler on the skin than rubbing alcohol
When companies use SD Alcohol 40B in products besides food, beverages or oral medications, the United States, Britain, Canada, Australia, and the rest of the free world require that it be denatured. That is, it must be made to “taste” bad. So don’t go drinking your hair loss products.
Alcohol is regulated by the Alcohol and Tobacco Tax and Trade Bureau (TTB) of the Department of Treasury. It is up to them how alcohol is denatured and which products are permitted for cosmetic use.
In hair care products its often added to solutions as a preservative to keep the solution sterile. Alcohol and Alcohol Denat. have no direct influence on positive hair regrowth. In fact it has been shown that SD Alcohol 40B will dry out your scalp and remaining hair strands if used to abundantly.
Don’t stop using hair products just because they contain SD Alcohol 40B. Most of the treatments aren’t potent enough (per dosage) to do any real harm or damage to your hair. However, we don’t recommend using strictly SD Alcohol 40B to treat hair loss; it’ll do you no good!