I started using this product in combination with a facewash and sudocrem in an attempt to try and improve the visible appearance of acne on my face. As the title suggests, this product does serve a dual purpose - and it does it very well! I use this after washing my face every evening to soak in overnight, and then use it as a primer under my makeup every morning. It feels very nice when applied, although doesn't feel as smooth as usual primers. Despite this, it doesn't make my face dry and I don't have dry skin or patches when I apply my foundation. It appears to be working very well so far considering I haven't been using it for too long, and I'm glad I don't have to worry about my makeup having a detrimental effect on my acne with this product underneath. La Roche Posay is a very effective brand recommended by all top European dermatologists, but unfortunately this does mean that the product comes with a larger price tag than I would usually spend on acne products. From the effectiveness so far, I would say the price tag is worth it for me, and it's worth a try for anyone struggling with acne.