111SKIN HARLEY ST. LONDON Hyaluronic Acid Aqua Booster 20ml / 0.67fl.oz

It's an incredible line of products a bit on the high end ,worth every cent.

I love this product! I have tried cheaper ones with similar ingredients but keep coming back to this one because it leaves my skin so refreshed and glowing! Would recommend for sure!

This high-end skincare line—carried in Neiman Marcus, Harrods and Bvlgari spas, among others—was developed by plastic surgeon Dr. Yannis Alexandrides, who said he started the line to, "bring clinically-inspired skincare that addresses real-life concerns to our customers. Using my 20+ years of expertise and medical observations."This is a liquid, highly concentrated hyaluronic acid serum that they advise only needs a few drops, and may be mixed into your moisturizer for easier and more even application. (I do this anyway, making a little serum-mositurizer cocktail, but nice to see a brand advertising this method.)In addition to hyaluronic acid, which helps skin better absorb and produce natural moisture, this serum also features niacinamide, in the form of Vitamin B3, which can help smooth skin, minimizing pores, and address redness and uneven skin tone. They also advertise urea which is a nitrogen derivitive typically found in urine (hence the name), but they describe more palatably as a "humectant that plays a part in our natural moisturizing factor." Aloe leaf is also high on the ingredient list, though not touted as a main active factor.It is paraffin and silicone free, but does contain benzyl alcohol, glycerin and cellulose gum—all perservatives or chemical enhancers for the look/feel of a product. It has a bit of a medicinal smell that isn't great, but fades quickly.The packaging on this looks and feels expensive, because it undoubtably is, but it's what's in the bottle that counts. You get a little over half an ounce for this sky-high price, but given the small amount advised for daily use, it should last quite a while, which would make the exorbinant cost slightly more palatable if I thought this was more effective, but I don't. This leaves skin feeling a little sticky, and doesn't seem to absorb and plump the way other hyaluronic acid serums I've tried do.Bottom line for me is that hyaluronic acid is great, but there are better, and far less expensive, ways to get it into your skincare regime.

The 111SKIN HARLEY ST. LONDON Hyaluronic Acid Aqua Booster comes in a small bottle with a well-made dropper that's easy to dispense. It's a thin gel serum that goes on smoothly. It feels rich and luxurious on the skin. It soaks in quickly without any oily or tacky residue and is the ideal primer for follow-up moisturizing (it can also be mixed with moisturizer). I put the booster on before bed and woke up to silky smooth skin that looks plump and refreshed. There is a slight fragrance that is barely discernible. Is this better than some other serums I've tried? Hard to say. It's definitely more refined than most I've tried.The ingredient list is relatively short.Made in Bulgaria~ Kort

The odor that some people are complaining about is a light, medicinal type smell. And it goes away quickly. The strongest smelling ingredient is most likely niacinamide, which is a form of B3. It isn't likely urea, because I have creams with urea in it and they smell differently. What matters is how well it works. After you cleanser your face at night, add a few drops of this product into your night cream, mix it and apply to your face. You can also apply it without putting it in another product or put it directly on your face. I would recommend a moisturizer if you put it directly on your face after cleansing,