Episode 338 - Can cheap drugstore hair products really ruin your hair?
The Beauty Brains
00:00
How to Measure the Deepness of an Ingredient
Tape stripping is a way to measure the penetration of an ingredient into the skin. It would be very difficult to measure 20 times deeper than tape stripping. Even if it's at one layer and it goes down to 20 layers, well, it doesn't really matter. If some people like the drop it device, I'm a little skeptical.
Transcript
Play full episode
