There's an old joke there about a wife who tells her husband that she wants fuller breasts, he tells her to rub toilet tissue on her breasts because apparently it was successful on her tush. Maybe he's now her ex-husband. I won't tell you to use toilet tissue on your face, but I would not expect incredible results from topical facial fillers.
I actually had a treatment today with Intracueticals. It involves topical hyaluronic acid with focused hyperbaric oxygen application to "drive" the product into the skin. The immediate effect was some fullness and improvement in the nasolabial folds. The company recommends 4 to 5 once a week treatments followed by once a month maintenance treatments. It costs $150-$175 depending on the combination of "potions" that are sprayed onto the skin.
Skin Medica and Visible Youth (Enhance Skin Products Inc., Toronto, Ont.) both have products that claim to have molecules that allow hyaluronic acid to enter the skin. I am sure that there are other products as well. These topical products won't come close to the correction obtained by using actual fillers.
Good luck and be well.