Niacinamide??

[ale_gol]

What’s it for and is it good / worth using

 

[iqletandrew73]

skin, beneficial, use it, if you're more interested in it, just look up on google

 

[yahgamy]

helps fade dark spots

 

[shahoorear]

https://www.researchgate.net/profile/Paul-Matts/publication/286270242_A_Review_of_the_range_of_effects_of_niacinamide_in_human_skin/links/57601eef08ae2b8d20eb27ba/A-Review-of-the-range-of-effects-of-niacinamide-in-human-skin.pdf?ref=myskintips.com

 

[ale_gol]

skin, beneficial, use it, if you're more interested in it, just look up on google

Good for brightening dark under eyes?

 

[rarara]

Good for brightening dark under eyes?

Lukewarm pair it up with retinol 0.1% use it once every other night for 2 weeks then switch to nightly after a month of 0.1% formulation jump on 1% retinol use it as you introduced 0.1% then build tolerance and shift to retinal