Changing Routine

I have tried many products and gone through multiple breakouts (due to unsuitable products) to get to where my skin is today! And I’m very grateful for my current skincare stash. However, I’ve been educating myself and found many products that I may like. I’m not sure if I should purchase new products and try it out or stick to my current routine. As mentioned, I don’t have anyone to give my products to if they are not suitable for my skin type. So if I do purchase new ones and they fail to work, I would be wasting money and packaging! What are your opinions?