It is real L-ascorbic acid, listed high on the ingredient list, at a genuine 10%. That alone puts it ahead of a lot of pricier serums that quietly use a derivative.
The opaque tube is the right call. Vitamin C dies in air and light. Packaging is not a detail here — it is half the product.
Fragrance-free, hyaluronic acid for hydration, and widely available for under $30. For a first vitamin C serum, this is a sensible place to start.