When in my routine should I apply Paula’s Choice Hyaluronic Acid Booster?  The Hyaluronic Acid Booster can be used in your daytime, nighttime or both routines after cleansing, toning and exfoliating. Try applying it on its own or mix it into your favorite serum, treatment or non-SPF moisturizers for a big hydration boost. Is it OK to apply Paula’s Choice Hyaluronic Acid Booster around my eyes or mix it with my eye cream? Yes, Paula’s Choice Hyaluronic Acid Booster can be applied directly to the skin around your eyes. You can also mix 2-3 drops into your favorite eye cream, eye serum or eye gel. Can I use Paula’s Choice Hyaluronic Acid Booster if I have acne-prone, oily skin oily? Yes, Paula’s Choice Hyaluronic Acid Booster is suitable for oily, acne-prone skin. Its sheer, water-based texture and non-greasy finish shouldn’t make breakouts worse or pose a risk of clogging pores. For those with very oily skin, this booster can be used as an all-over hydrator with no separate moisturizer needed.  Is Paula’s Choice Hyaluronic Acid Booster suitable for sensitive and rosacea-prone skin? Yes, Paula’s Choice Hyaluronic Acid Booster is good for sensitive skin and is even suitable for rosacea-prone skin. In fact, its mix of barrier-repairing ingredients are highly likely to strengthen skin’s surface which may help visibly improve redness and sensitivity because its mix of barrier-repairing substances can boost its ability to withstand damage. Is Paula’s Choice Hyaluronic Acid Booster oil free? Yes, Hyaluronic Acid Booster is an oil-free product. Can you pair Paula’s Choice Hyaluronic Acid Booster and niacinamide? Yes, you can use Hyaluronic Acid Booster with niacinamide products. You can mix a few pumps of the Hyaluronic Acid Booster into any niacinamide serum or moisturizer or layer them in order from thinnest to thickest texture. Can you mix salicylic acid with hyaluronic acid? Yes, salicylic acid and hyaluronic acid can be used together. What should you not mix with hyaluronic acid? We aren’t currently aware of any research showing that there are any ingredients that you shouldn’t mix with hyaluronic acid. One exception is that you never want to mix your Hyaluronic Acid Booster into any SPF product, this could dilute the SPF’s efficacy. What does hyaluronic acid do for your skin? Research shows hyaluronic acid has numerous benefits for skin, including drawing hydration into skin which helps it feel softer and look more supple. Can people with combination skin use hyaluronic acid? Yes, people with combination skin can (and should!) use hyaluronic acid. Is it OK to use hyaluronic acid every day? Yes, you can safely use hyaluronic acid every day, up to twice daily. You can even mix and layer multiple hyaluronic acid products in your routine because it’s a gentle, non-irritating ingredient suitable for all skin types and concerns. Do you wet skin before applying hyaluronic acid? If you prefer applying leave-on products like hyaluronic acid when your skin is still damp, that’s perfectly fine, but there isn’t research showing that doing so is required for maximum efficacy.