Hyaluronic Acid Complex, 5 fl oz (150 ml)

I really like that it has only a few ingredients. It feels nice on the skin and absorbs quickly. My skin feels smooth afterwards and over time it has improved in elasticity and texture. Since I use supplements too, I cannot attribute everything to this One Thing only, but I believe it to be a contributor. Since not much needed at a time a bottle last quite a long time.

Love this! It comes in a big bottle and lasts for a very long time. I use it on my face and hair as well (while it’s wet) and it makes it super shiny and hydrated. Will definitely buy more of this but unfortunately it’s always out of stock. Will be trying other serums from this brand and hopefully I will like them just as much. Thank you iherb for all the amazing k beauty brands that are available! Truly amazing especially that it is hard to find them online at a good price! They’re always more expensive

I have used hylauronic acid serums from different companies and I have to say this is one of my favorite. It has that thick liquid consistency that you can feel on you fingers which speaks for the quality of the product, and also the size is very good for the price!

Lightweight and effective hydration booster This Hyaluronic Acid Complex is a simple yet effective hydration booster. The texture is very lightweight, absorbs quickly, and layers well with other skincare products without pilling or feeling sticky. It helps keep the skin plump and hydrated throughout the day, especially when applied on damp skin and sealed with a moisturizer. I also appreciate the generous size, which makes it great for daily use on both face and body. Overall, a high-quality and versatile hyaluronic acid product that delivers reliable hydration. I would definitely repurchase.

Very lightweight, absorbs fast, works well under any cream. Gives a basic hydration boost without feeling sticky. It’s not a miracle product, but for the price and size it does the job. Good everyday humectant.

I’ve been using the One Thing Hyaluronic Acid Complex for a few weeks, and I absolutely love how plump and moisturized my skin feels. It absorbs quickly without any greasy residue and leaves my face feeling refreshed all day. Perfect for anyone looking to boost hydration and maintain a healthy glow!

I love this product and will definitely order it again. Great for sensitive skin. It really moisturizes the skin. I use it every night with Niacimide and during the only Niacimide with sunscreen. It is a big bottle so real value for money.

I've been using the One Thing Hyaluronic Acid Complex for a while now, and it's become a staple in my skincare routine. The lightweight, watery texture absorbs quickly, leaving my skin feeling plump and deeply hydrated without any sticky residue. As someone with sensitive skin, I appreciate that it contains minimal ingredients, reducing the risk of irritation. It's vegan, fragrance-free, and suitable for all skin types, including those prone to fungal acne. I use it after cleansing and before applying moisturizer, and I've noticed a visible improvement in my skin's texture and overall hydration. It's also versatile—I've used it as a hydrating mist and even as a base for a DIY sheet mask. For the price and quality, it's a great addition to any skincare regimen.

I recommend this serum very good wuality and the size wow 👍👍👍👍👍👍my age 50 i use it twice aday it good for sensitive skin and moisturize very well

I’ve been using hyaluronic acid a lot, and this one is very good and affordable. It also doesn’t contain a lot of unnecessary ingredients like many other options