The £16 skin plumping serum so tough on wrinkles shoppers are 'scared it will run out' "I can tell a huge difference in my skin if I run out." The serum claims to hydrate, plump and reduce the visible signs of ageing (Image: Getty Images ) Hyaluronic acid is proven to help plump and smooth the complexion , while supporting the skin barrier. It also contributes to reducing the appearance of fine lines and wrinkles by increasing skin hydration. One of the best products on the market containing the active ingredient is the Hyaluronic Acid 2% Plumping Serum from Facetheory. And its price has just been slashed as part of the retailer's ongoing sales. It's now £16.50, down from £22 - you can see everything included in the sale here . The powerhouse combines three forms of hyaluronic acid to hydrate, improve elasticity, and enhance the skin's natural repair process. READ MORE: Liz Earle fans 'ditch' high-end moisturisers for £36 cream that smooths even 'deep wrinkles' READ MORE: The £6 Amazon mascara that makes lashes look so 'long and full' it's the UK's number one Suitable for all skin types, it can be paired with other actives for maximum results. The serum has a 4.8 rating out of 225 reviews . A satisfied shopper wrote: "One of my all time favourite serums. It sinks in immediately and makes my skin visibly soft and moisturised ." Another added: "A wonder product for my face. Easy to apply, no reactions at all and my skin is much clearer ." "This is the best serum I have used, it melts into the skin leaving it glowing" (Image: Facetheory ) A third penned: "It's so lightweight, but packs a big punch of hydration . I can tell a huge difference in my skin if I run out." There has been very little criticism of the product , but some customers weren't as impressed with the results. "Honestly, I have felt no difference in my skin," reacted a buyer. Alternatively, there's the £59 Hydr8 B5 Intense from Medik8. Enriched with superfood antioxidants, it works to replenish and recharge the skin's moisture levels, while leaving it plumper and firmer. It boasts a 4.9 rating out of 1,494 reviews: "I love this product! When I put it on my skin feels so good, it's super hydrating and it even takes the wrinkles away ." Article continues below On the cheaper side, there's the Nip+Fab Hyaluronic Fix Extreme4 2% Hydration Concentrate . Now £19.96 at Boots, it's formulated with four super active moisturising ingredients, and two hyaluronic acid molecules.