One Serum SPF 45.

"This is a chemical sunscreen, there's no cast. It has sodium ascorbyl phosphate, that form of vitamin C that may be helpful for people with acne prone skin, it also has gluconolactone, a polyhydroxy acid that's moisturizing and really helpful for skin texture, very mildly exfoliating but not irritating, and it's got hyaluronic acid which can help with hydration. I would think of this product as like a daily moisturizer with sunscreen, it's pretty moisturizing. It is not water resistant so it's not a product I'd use for sport. It's a fluid formula, very moisturizing, I'm able to tolerate it without any burning or stinging, but it did run into my eyes a little bit as the day went on and I got a subtle kind of burny, blurry eye effect. This is pretty good though, if you are looking for a nice daily moisturizer that has sunscreen, I would suggest this, it's great, it doesn't peel and I think cosmetics will go on over it just fine. The one thing I will point out is the product suggests adding drops of it to your moisturizer for added SPF, that is misleading, I would not dilute out your sunscreen into your moisturizer, it will impact how the product protects you, so I would not suggest doing that."

"The One Serum comes as a mini, so having this little mini to actually just pop in your bag or even pop it in your pocket, so tiny, and be able to reapply throughout the day makes this like a super handy little thing to have. It's super easy to reapply without having to check in the mirror if it's like left on your skin or anything. It just sinks perfectly into the skin and you get a nice even spread using the correct amount of sunscreen to cover all areas."