TOSOWOONGGlutathione Serum with 20,000ppm Glutathione, Niacinamide and hyaluronic acid, Dark Spot, Improve skin elasticity, Revitalize complexion, Korean Skincare, 30ml, 1.01 fl. oz.

This is my 3th bottle, it is great. While some find the smell steong (ok for me) it indictes potent glutathione. My dark spots are not returning even i bike a lot (with sunscreen of course)

I've spent nearly $5K trying to get rid of a large spot on my cheek (likely melasma). I've tried Pico laser, Triluma, Museley, Cyspera - nothing worked. Pico laser would clear the spot but it would come back within a few weeks. I started using this alongside vitamin c in the a.m. and a tranexamic acid and arbutin cream p.m. It's only been two weeks and the results are remarkable. I cannot recommend this product enough. I have very reactive skin and so far I've had zero issues. It does smell, as others have pointed out, but once it's on the skin you can't smell it.

So, according to research studies, glutathione is effective at treating pigmentation and melasma, particularly when used with a microneedling. I do this myself, although it's ideal to have a pro apply it. Just make sure to sterilize the roller with alcohol and water after every use. I have noticed a difference but if you don't mix it with a humectant like snail mucin or squalane oil then there will be some peeling. Patch test it first and see how your skin reacts. I would compare the results to thiamidol but I can't quite tell which is more effective.

Since the first drop I used I noticed a very bad smell, when I finished applying this product to my face, my fingers smell so bad, I washed my hands and they still smell bad. I asked my daughter to smell my face and she told me the smell, mom smell so bad. I couldn’t use it for a second time, I could smell all day that bad oil on my face. I returned next day, I couldn’t use it for a second time. It is the first time a product for my face smell bad. I definitely don’t recommend this product.I bought other products from the same brand and they were fabulous.

I’ve been using the TOSOWOONG Glutathione Serum for a few weeks now, and the results are undeniable. My skin looks noticeably brighter, more even-toned, and has a healthy glow that I didn’t have before. It absorbs quickly and layers perfectly under my moisturizer and sunscreen—no stickiness or residue.What I love most is how gentle yet effective it is. I have sensitive skin, and this serum didn’t cause any irritation or breakouts. It actually helped calm some of my redness and gave my face a more radiant, smooth appearance.The ingredients feel clean and high-quality, and the packaging is sleek and hygienic with the pump dispenser. A little goes a long way, so the bottle lasts longer than I expected.If you’re looking for a serum that delivers on brightening, evens out your complexion, and leaves your skin feeling soft and refreshed, this is it. Highly recommend adding it to your skincare routine!

This serum I bought in hopes to reduce dark spots hyperpigmentation and fine line and wrinkles in my skin. The packaging was nice and the liquid goes on very lightly just like putting on a lighter weight aloe product. It does have a slight stickiness to it for the first 5 minutes and stink but the stickiness and smell go away. I can’t put my finger on what the smell is but it’s pretty unpleasant in contrast to what some people have said in their reviews. I think it smells like if burning rubber and sulfur mixed, it’s pretty gross. I would consider returning this product just for that if I don’t see much progress or improvement in a few days because it made me kind of queasy. I will try and remember to update this review!

This is the best product I’ve ever used to exfoliate my skin, to the point of light peeling. I do not have sensitive skin and over the years I’ve tried various at-home peels that promised the elimination of dark spots and red marks from previous breakouts. None of them worked - either they dried out my skin and irritated it without eliminating the discolorations or they were too weak and did nothing at all. This product is not for every day use and I wouldn’t use it all over my face like a serum. However, putting it on problem areas - like my chin, which had discoloration and milia, and some dark spots on my cheeks, has totally eliminated them. I apply a thin layer of this liquid every second or third night. I started using it about three weeks ago, and I noticed improvement within the first week. I know that some reviewers have mentioned an unpleasant smell, but to me, it smells like black licorice.

Excellent! It is making my dark spots fade! Been using it once a day along with votamin C serum. I am buying again!