Vital C15 Serum

Within one week, my skin showed definite signs of repair. The glow and texture of the skin continues to improve into the third week.

I love this serum. It is so lightweight. It does not feel greasy or oily. Just a nice clean feel.

I absolutely love this product. I highly recommend it.

I used this product years ago but stopped using it for awhile due to the cost. I’ve been using another Vitamin C product but after switching back to this product, I feel like I noticed a difference in my skin after just 2 weeks. It’s worth it! It does have a bit of an odd smell that you have to get used to as well.

Best vitamin C out there! Since I’ve started using it, my skin has never looked better. Even, glowing and improved texture. Love it!

I’ve used the Vital C15 Serum daily for the past couple years and my skin loves it!! This is a must buy!!

This serum has a beautiful glow. Soft skin, and a shine.

my skin feels and looks great. It’s definitely pricey but worth it.

I have used many different vitamin C’s just to give other products a try but I always come back to the best. It leaves my skin feeling hydrated and smooth

Good for repair

I have loved this product for years! About 9 months ago I tried something else and gave it a good try, but I went back to my GM Collin!

Superior vitamin C

This serum leaves my skin feeling healthy and smooth. Helps with wrinkles and aging as well. I notice a difference when I run out of it, and anxiously await my refill!

I’m using C 15 serum since November 2024. My skin feel very soft and clear. I love it.

I tried Vitamin C during the big craze from here and my other trusted brand. At the time, I had acne and this was the safer option as it is a true serum and not at all creamy. It also lasts a pretty long time! The only thing I don't love is that the bottle lasts so long (I use it once daily) that it's darkened in color by the end of the bottle. I don't know if that affects its usage but it always bums me out.

VITAL C15 SERUM

I’ve used this vital C on and off over the last few years and my skin never looks better than when it is a part of my daily routine. It is true to last about 3 months before the efficacy has a noteable difference. Overall a must have product!

I started using this product after a facial I had 5 months post partum. My skin had gotten so dry and flaky. 2 months later I'm still using this product daily to maintain my hydrated glowy skin! Game changer!

I love this product that was recommended by my facial specialist at East Wing

Makes my skin glowing!!

I have tried several vitamin c’s in the market from high end to low end and nothing matches the efficacy, quality, and price of this vitamin C. A luxury staple I will always invest in.

I bought this product from my esthetician, who provided instructions for opening and closing the bottle. Within two weeks it took on a smokey smell ( not awful, just unusual). The expiration date is July 2025. Should I be concerned, is it still effective? My face is smoother.

I like this alot . It has tightened up my face and it lfeels so much smoother

I never received this product

My first experience with this product was during a brightening facial, and I loved how my skin looked and felt after. I was hesitant to buy this product because I assumed how I looked and felt after the facial was due to the entire process and not just this one product, but I tried it. A few drops of the serum is all you need and it doesn’t feel sticky or heavy once applied. There was a noticeable difference in the look and feel of my skin after using for 2 days. Highly recommend.

I've been using this Collin Vitamin C serum for a couple years, and I can't live without it. The best! On time delivery.

I use this daily. Day and night. Great product.

The product does an effective job of moisturizing.

I got this product from my spa and I visibly saw improvement on my skin and also people around noticed my skins improvement. I wear it day and night twice a day . Must have ! All my skin routine products are G.M. Collin amazing products

VITAL C15 SERUM

Love GM Colin. This one is excellent. Result is really noticeable after one week of use twice a day. And as usual for GM Collin, smell is divine.

I tried this product when I bought it from a spa after a facial. I almost immediately saw an improvement in my skin. This is my second bottle, first purchase from this seller, and still very happy. Great service, quick and the product is the real deal. Will definitely purchase from them again!

Im not one to buy expensive serum but i have been searching (for my sensitive skin that actually works) and have been buying serum after serum and nothing. I wasn't satisfied with the result until i found out i can order gm collin online and came across this product. It was worth it. Im loving my skin now.

Amazing serum!