Over the counter (OTC) skincare, or products that you can purchase from your friends, are most likely not tested for effectiveness and are not held to the same standard as professional grade skincare. Since there is no regulation required, non-professional products are made in large batches. Professional grade skincare is created in smaller batches which results in more quality control and better ingredients. OTC skincare also contain a low percentage of active ingredients. They may say their cream has retinol or vitamin c in it, but the ingredient deck will show that there is typically not enough of the ingredient for it to be effective. Due to low quantities of active ingredients, OTC products are unable to penetrate past the top layer of our skin. This prohibits them from achieving the desired anti-aging results.