Open Formula Retinoid 0.5% Facial Serum – Essential 3-Ingredient Retinoid for Face & Neck, Retinol Alternative – Fine Lines, Wrinkles, Dark Spots & Uneven Tone – Gentle Vitamin A, 1 Fl Oz

I was skeptical to try another serum. A friend of mine recommended this and her skin always looks so clear, healthy, soft and vibrant. I have been using it consistently for 2 weeks and 2 friends have mentioned how amazing my skin looks and a stranger told me she needed to know what I use. Highly recommend!!

Open Formula's Retinoid 5% Serum was a terrific find. I searched for a strong retinoid, and since their reviews were glowing I decided to jump in. Everyone has been noticing a change in my skin since a week after trying it! I saw less wrinkles, and my skin glows, but I thought it was just user bias lol. The retinoid doesn't irritate my skin, even though it's a stronger product than retinol, and its nice fragrance is so light it's hard to notice. I'm so delighted to find the whole package in Open Formula. This is definitely inexpensive for the value you get. Nice sized bottle, and it'll last a long time. Makes a great gift, too.

Very good product, gentle on the skin, I have been using retinol 5% for a while and this one is way less irritating than others. I am just uncertain about the concentration, on Amazon it says 5% but then on the bootle it says 0,5%. I am a bit septic and I hope it is really 5%.

Ordering and shipping were flawless. The packaging is simple but effective in keeping the serum protected from light. It applies easily and only in the places where I intend to o put it. The only reason that this is not a five-star review is that it is too early to tell how effective it is going to prove to be. The initial signs are all positive and I may revisit this review in a month or two to update it.

Seems to work well for now! Interesting to see over time

Just started using it. More later. Edit: I’ve been using it for a year a few times a week but don’t feel any difference. The glycerine like base liquid has an oily feel but isn’t sticky and quickly absorbs, which is good, but I’m not sure it’s doing anything useful at all.

I have tried quite a few serums and have been disappointed. Most were too sheer and very drying. Open Formula is different. For one, it’s not drying. I have dry skin and this serum alone is enough to keep my skin moisturized. My skin is still supple and hydrated in the morning. Since I just started using this product I don’t know how effective it is in removing the dark spots, but I like the way this serum makes my skin feels.

I had to give this a star, it didn’t deserve one. This is advertised as 5% retinol, BUYER BEWARE! It is only .5% and although I am returning it 6 weeks after purchase, Amazon is giving me a full refund for deceptive product description.