Which scores higher with the experts?
Paula's Choice 10% Azelaic Acid Booster holds a Guru Score of 82%, ahead of The Ordinary Hyaluronic Acid 2% + B5 at 76%. The first draws on 22 independent expert reviews, the second on 23. On the experts' own numbers that puts 10% Azelaic Acid Booster in Yay territory and Hyaluronic Acid 2% + B5 in Yay.
What do the experts say about 10% Azelaic Acid Booster?
Paula's Choice 10% Azelaic Acid Booster carries a Guru Score of 82% from 22 independent experts. This booster earns consistent praise for its ability to calm redness, clear acne, and fade post-acne marks, all in a lightweight texture that layers easily or mixes into moisturizer. The added salicylic acid makes it particularly effective for oily and acne-prone skin, though a few experts note it changes the safety profile for pregnancy, azelaic acid alone is safe during pregnancy, but the salicylic acid combination raises caution. Those with sensitive skin may want to start slow with the added exfoliant.
What do the experts say about Hyaluronic Acid 2% + B5?
The Ordinary Hyaluronic Acid 2% + B5 carries a Guru Score of 76% from 23 independent experts. The reformulated version earns consistent praise for how it blends smoothly with other products in a routine, a marked improvement over the original formula that would foam and clash with moisturizers and sunscreen. Most gurus highlight its texture-evening effect and affordability, though one notes it may not feel deeply hydrating on its own. One expert cautions that using a separate hyaluronic acid serum on top of products already containing it risks overdoing it; if you do use this one, apply it to damp skin and follow with a moisturizer to lock in the hydration.
Which should you choose?
On the experts' scores Paula's Choice 10% Azelaic Acid Booster comes out ahead, 82% to 76%, a gap of 6 points. It has 22 experts behind it against 23 for The Ordinary Hyaluronic Acid 2% + B5. 10% Azelaic Acid Booster is most often recommended for sensitive and acne-prone skin, Hyaluronic Acid 2% + B5 for dry and mature. Both are independently verified on the Guru Index, so either is a sound pick; let the use case and your budget settle it.