Can a hyaluronic acid filler be used all over your face to help with dry skin and hydration? (I am 30 years old)

Hyaluronic acid fillers are best used to volumunize facial structures that have sustained volume loss, they are not well suited to treat dry,  dehydrated skin. You can use hyaluronic acid  based topical preparations to help with dry and dehydrated skin.

HA fillers are meant to be injected and used in specific location to create a more youthful appearance by adding volume to the skin. They are not intended to moisturize the skin. you are better off using a good shin care program to improve the skin

Thank you for your question. Although it may seem counter-intuitive, hyaluronic acid based dermal fillers are not viable to use for dry, dehydrated skin. I would recommend utilizing a moisturizer containing hyaluronic acid or a pure hyaluronic acid to apply to your skin daily. If the dryness persists, I recommend seeing a dermatologist to assess your skin. I hope this helps. Best of luck to you!

Yes you are absolutely right. Although not technically a "filler", hyaluronic acid can be injected all over the face in order to provide much-needed moisturisation. There are several benefits to this treatment, which as you say involves 2 mls injected every six months. Hyaluronic acid itself stimulates new collagen formation, it hydrates and enhances all biochemical processes, and the microtrauma of the needle also stimulates new skin growth through the effect of growth factors. Most of the major filler companies now make such a product; they are known as Skinboosters, or Juvederm Volite and are a fantastic way of keeping your face nice without changing the proportions.