With which products should I (not) combine lactic acid? Can i combine it with vitamin C?

Lactic acid

Fragnance is a little strong, but i don&#39;t mind.

This product is good for combination skin because it doesn&#39;t clog pores. The skin isn&#39;t oily after its use. I have been using it for years.

It doesn&#39;t clog the pores. After using it my skin is smooth and it&#39;s not dehydrated. When used the scrub melts slightly.

KatNik