Received these as a gift from a family member and was super eager to try them. I have tried other vitamin C products such as Lancome, and I'm used to the texture and fragrance.
I tried this product over my entire face & throat. The high content of dimethicone (a form of silicone used for smoothing feeling and conditioning) makes the product apply nicely and avoids the pitfalls of oil based products.
After a few days, the exfoliant propoerty of the product kicked in, particularly around the skin on my chin. It worked so well that it actually flaked similar to a peel, though the redness was intense. Some people confuse this with drying; for people with dry or sensitive skin this will be too aggressive; If you have sensitive areas, you would do well to avoid putting the product on the area or apply every other day to those areas, or limit it to once a week.
I will report back after the bottle is completed, as 5 days is too early to tell, and I had to stop applying it to my chin to give it a "rest" from exfoliating.
Update: I had to stop using this product after a week since it was too aggressive for the skin on my chin. I will try it again after my skin normalizes, but I may end up using it only on my forehead area