Google Shopping and search
The molecule and the percentage in the title, no procedural comparisons
Titles carry the specific active and its strength because that is the query. Retinal serum 0.1 percent 30ml is matchable. Youth renewal elixir is not. Where a product is aimed at a defined concern, the concern word belongs in the title too, since fine lines, firmness and dark spots are searched as separate things.
Search campaigns split by literacy level. Beginner queries such as retinol for beginners want the gentlest option with the introduction guide attached. Experienced queries naming a specific molecule and strength want the exact product with the formulation detail. Those two groups have completely different landing pages and the same page will lose one of them.
The claims line is strict. Cosmetic products describe the appearance of skin, so reduces the appearance of fine lines is permissible territory while removes wrinkles or reverses aging is not. Comparisons to injectable or clinical procedures are the fastest disapproval in this category, and copy suggesting a product replaces a medical treatment will not run.
