For professional medical information on natural medicines, see Natural Medicines Comprehensive Database Professional Version.

During testing, we found it to be incredibly effective—we actually could tell a difference in the appearance and feel of our skin on days when we used it vs. Caudalie Vinosource-Hydra SOS Hydrating hyaluronic acid serum is a lightweight formula that feels refreshing on the skin. If the product made our skin feel at all dry or tight, we recorded how long these effects lasted and whether or not they were a one-time occurence. Created by Beauty Pie's go-to Swiss skincare scientist, this pink bottle is packed with three different weights of hyaluronic acid to allow deeper penetration into the skin.It’s powered by the maximum recommended concentration of hyaluronic acid (2%) in low, medium, and high molecular weights. It’s surprisingly lightweight and works wonders to leave the skin glowing and impeccably hydrated sans residue or stickiness.

It’s formulated with the brand’s Triple-HydraTM Complex, which drenches skin with three molecular weights of hyaluronic acid, plus polyglutamic acid to plump skin and leave it hydrated and smooth. Together with the moisture-trapping power of hyaluronic acid, Morning Expert is a potent combination of ingredients that will give skin a bright morning glow and help you put your best face forward. In the case of hyaluronic acid, it’s useful for increasing hydration while slowing down the appearance of wrinkles. You should see smoother, less lined, more moisturised skin almost instantly and you will notice your skin feels softer, too," explains Paula, saying everything we want to hear. Hearst UK is the trading name of the National Magazine Company Ltd, 30 Panton Street, Leicester Square, London, SW1Y 4AJ.

Vitamin C is a fantastic multitasking ingredient that boosts collagen production to plump up skin, promotes recovery and healing, and gently exfoliates dull outer layers of skin to reveal a fresh, glowing complexion. We wanted to love it as much as the ingredients list, but at the end of the eight-week testing period, we couldn’t tell much of a difference. It also contains medium-weight hyaluronic acid, which is a bonus since a serum with multiple molecular sizes is ideal. The only thing we didn’t love was the fact that the dropper felt too wide for the bottle; we had to tinker around with it each time we used the product.