A simple tissue can tell you what type of skin you have. If you are unsure of your skin type, take a tissue, unfold it, and press it to your face. If you see oil on the tissue in the areas of the forehead, nose, and cheeks - you have oily skin. If it only shows oil on the forehead and nose, you have combination skin. No oil means you have normal or dry skin. If your skin feels taught, it is likely on the dry side.

https://www.mid-day.com/lifestyle/infotainment/article/neotonics-reviews-truth-exposed-effective-skin-and-gut-probiotic-gummies-usa-23301586