There are a couple ways that companies can use to allow for light/UV unstable ingredients to +
Natural cosmetics from health food stores always irritate my skin
Collagen, I assume you mean the hydrolysed collagen, would fall more into +++
It's a waste of time. The small studies currently don't really support the ideas ++
For hands etc. Weleda skin food
My “I’ve got 5 mins to get ready” flatlay 💕++
I use Weleda skin food to prep my skin then touch in sol no poreblem primer+
After I brush and floss at night, I take a cotton swab and dip it in ++
Dry skin makes my makeup patchy. I swear by Weleda skin food as a moisturizer + touch in SOL ++
More of a skincare question but this is my home board (also posted on SCB) ++