Paula's Choice 5% Niacinamide Booster

Paula's Choice's official facial product is called the 10% Niacinamide Booster and comes in a 0.67 fl oz size, while its separate 5% product is the 5% Niacinamide Body Serum. The catalog title appears to combine those two products. [10% Booster](https://www.paulaschoice.com/10pct-niacinamide-booster/798.html) [5% Body Serum](https://www.paulaschoice.com/5pct-niacinamide-body-serum/581-5810.html)

Paula's Choice says the 10% formula targets the appearance of enlarged pores, uneven skin tone, rough texture, redness, dryness, and fine lines. It can be used alone or mixed into a moisturizer or serum. [Paula's Choice](https://www.paulaschoice.com/10pct-niacinamide-booster/798.html)

The 5% body serum is formulated for uneven body tone, rough texture, and dryness, with niacinamide, panthenol, and prickly pear extract. Paula's Choice describes applying it before regular body lotion. [Paula's Choice 5% Body Serum](https://www.paulaschoice.com/5pct-niacinamide-body-serum/581-5810.html)

Not necessarily, because irritation depends on the full formula and the individual user's skin, not only the percentage. Paula's Choice sells products with 5%, 10%, and 20% niacinamide, so patch testing and gradual use are sensible for any concentration. [Paula's Choice niacinamide guide](https://www.paulaschoice.com/shop-ingredient/niacinamide)