Left cheeks with retinol flush the next day and slight breakout of bumps but will preserve and see will skin acclimate to the product 

I did like it but if you continue with the crystal retinal series it gets very expensive over time, I use the Avene Retinal instead now

Would recommend this product for plumpness and smoothing skin tone however use sparingly as can cause dryness and definitely follow directions as to how to introduce into night time regime 

I always wanted to use a retinol serum which meets the needs of my sensitive skin and I’m so grateful I found it. This retinol is perfect for beginners and does not irritate or dry out the skin. It still works its wonders  but it takes a certain amount of time to see some results. Soon I’ll by the one with a higher concentration. 

I have very sensitive and rosacea-prone skin and this caused no irritation. I used moisturizer around the eyes and mouth to protect the delicate area in case the serum would migrate there. The serum has a lovely texture and the smell is very nice.