I havent heard about a homemade fix+ but i know you can do one for a mixing medium. Its 1 part glycerin 3 parts water, but perhaps you may need to play around with the ratio to adjust it to your skin type.
Here is the ingredient list for fix+
Spring Water (Aqua), Glycerin, Butylene Glycol, Cucumis Sativus (Cucumber) Fruit Extract; Chamomilla Recutitia (Matricaria) Extract, Camellia Sinensis Leaf Extract, Tocopheryl Acetate, Caffeine, Panthenol, Arginine, PEG-40 Hydrogenated Castor Oil, PPG-26-Buteth-26, Fragrance (Parfum), Disodium EDTA, Phenoxyethanol, Methylparaben