The spicules in these are small and much more gentle than I expected. I’ve used other similar products and there is a big difference between VT Cosmetics and other brands. I tried all 3 strengths on my face as well, and felt no pain or discomfort…just teeny tiny little pricks if applying firmly. I’ve been using the 100 on a daily basis and there’s been a huge improvement in my skin. I have texture due to acne and PIH and my skin is smoother after using this. I also like that I can layer on other serums after and they sink deeper into the skin. It also contains centella asiatica and hyaluronic acid to help soothe the skin.