Luffs me a hyularonic serum, but have yet to find one that is just perfect.
Am using Absolution Serum Anti-Soif just now, which is lovely, but a bit lemony. Used to use Apivita Hydration Serum with Aloe, but it's discontinued (manage to buy it off eBay/Amazon sometimes, but that's only going to last so long).
Hyalamide doesn't agree with me unfortunately. Also needto avoid sweet almond oil and shea/cocoa butter as they make me break out.
Prefer the natural/organic end of the market, and I stick with cruelty free. Looking in the £20-30 range, but I would stretch to £50 for the fountain of youth.