Tranexamic Acid 5%.

"The Naturium Tranexamic Acid 5% is honestly the best out there. It's super smooth on the skin and [...] because of the quality formulation you won't get too much prickling or irritation, which I think is really important if you're going to pair it alongside another potent active. [...] You're going to want to look for something in a 5% concentration to really get maximum results, and [...] this is the one in the yellow pump [...] that you want because this is the right 5% [...] strength to give you the very best results. [...] I personally use it morning and evening because for me I think that gives the very best results. [...] If you're new to [...] tranexamic acid, I would start gently and gradually work your way up. Use it just once a day for the first month to allow your skin to become accustomed to the active, and then when your skin can tolerate it, [...] you can move to twice daily which is where you're going to see those next level results."

"I have two recommendations for you: number one, the 5% tranexamic acid by Naturium. Twice a week your routine is going to look something like this: double cleanse, tranexamic acid, kojic acid cream, and then [...] a moisturizer on top because these products can be severely drying. [...] The combination of tranexamic acid and kojic acid is fabulous, but this combo is a bit drying, so you'll use it twice a week."