Doesn't Irritate My Skin [SEP] I am in my early 50's and have been a regular user of anti-aging products for the past several years. This serum comes in a glass bottle and has a dropper applicator. It takes about half of the dropper to cover my face. It has a tacky (but not sticky) feel to it which remains for a while even after it has absorbed into the skin. The microbeads have to be crushed or else you have little white beads on your face. It's not difficult to break the beads. I just press on them and they rub into the skin. After applying the serum, my face was really dry. I have been using this at night. I have a multi-step skin care routine so I followed this with my nighttime moisturizer, then retinol, and some face oil. The serum doesn't irritate my sensitive skin. There is a mild scent, but nothing that I could recognize. Overall, it's okay. I haven't noticed any tightening or improvements in my skin. However, as a regular user of anti-aging products, I wasn't expecting anything new.