They're the cutting edge of skincare science, they don't come cheap - and serums and creams containing ‘growth factors’ and ‘stem cells’ can get dragged into controversy. Why? I'll try to explain. Stem cells can come from animal, plant and human.
Should young woman be doing Tweakments? I find this a really difficult topic to discuss because personally I wish they wouldn't, but that makes me sound like a real grumpy old reactionary -- and hypocritical as well because I've been doing these.
Do collagen supplements work? Absolutely. They will soften wrinkles and make your skin smoother - and help your joints, too. I used to be hugely sceptical about collagen supplements, but became a convert a few years ago.