TruSkin is one of the most popular low-cost vitamin C serums on Amazon. It is easy to find and has a very large number of reviews. Buyers vary on how well it suits their skin, so a patch test is wise.

Who it is for: people trying vitamin C for the first time on a budget.

• Pros: low price, easy to find, large review base.
• Cons: ingredient mix and feel may not suit everyone.

Verdict: a low-risk way to try the category.

Based on specs and verified buyer reviews, not our own testing. Specs and prices change, so check the current listing on Amazon. As an Amazon Associate I earn from qualifying purchases.