A new technique might make SPF testing cheaper.
In Vitro SPF Testing Could Be A Game Changer
Product testing
Can You Use Testimonials As Evidence of Efficacy?
Can you use a testimonial to justify a skin hydration claim for a collagen health supplement?
Penetrometry- An Underrated Technique
Penetrometry isn’t widely used or even known about by cosmetic formulators. But it has its uses.