isomers glutathione serum Skincare Antioxidant A concentrated antioxidant face serum formulated to help hydrate Glutathione – Isomers Skincare Laboratories
Description
You should see your skin becoming brighter and more evenly toned due its vitamin C content

Of course, you can use it during the day too as Rosehip oil absorbs well
DIY Anti-aging Face Serum With Vitamin C & CoQ10 This simple face serum recipe is formulated to even out a skin tone and provide anti-aging effects, such as cell regeneration and reduced appearance of wrinkles

Avoid adding more than couple as it may cause skin irritation
No water-based ingredients that might spoil and no preservatives needed
