You can use vitamin c after microneedling! , Not every vitamin c serum is made the same so it depends on the formulation of the serum. If you're trying a new vitamin c serum , patch test your serum a Vitamin C on Lips Before After TikTok This Vitamin C Serum Works So Well It Gets Mistaken For Laser Treatment And It's 40% Off C Lip Serum Collection (4 Piece) Vitamin C serum can be used either in the morning or night and even twice a day. , If you apply retinol at night, then use vitamin C serum in the morning. If you only use a moisturiser at night, then