In a word - useless! Have been using for weeks and no improvement whatsoever, very disappointed with this product.

I'm in my sixties and have brown spots on both hands. To check how effective the serum was i used it On just one hand so I could make a true comparison each week. Both hands remain exactly the same after weeks of use. A total waste of money.

I have used this now day and night for 4 weeks and have noticed no reduction in dark spots. Very disappointed as I have wasted my money.

I’ve used this serum for 3 months and have seen no difference in the pigmentation on my face. The product is also slightly sticky so not ideal under moisturiser and makeup. Really disappointing.

Have used this product for a month and see no visible change at all.

I used this morning and night for over 4 weeks with no change what so ever to a small light dark patch on my cheek

Very disappointed with this product. Have used twice a day for 4 weeks and absolutely no noticeable change what so ever. will keep useing it until its all gone but I dont expect any difference. Would love to a before and after pic of a user. Expensive product dont waste your money !

used for over a month and have seen no improvement

How been using this product twice a day for about 6 weeks made absolutely no difference

For 6 weeks I have applied this twice a day to a dark pigmentation spot on my face. I took a photo when I started using this serum and there is no improvement at all.