Isabel Fay is a high-purity, glycerin-free water-based formula that prioritizes mucosal safety. By eliminating common additives like parabens and glycerin, it minimizes the risk of osmotic dehydration and maintains the surface condition of sensitive skin. The formula utilizes a purified water base thickened with Hydroxyethylcellulose, a plant-derived polymer that provides slip without tackiness.
The absence of glycerin is a standout attribute, as it prevents the humectant-driven moisture loss that can lead to irritation. The pH is balanced to match natural chemistry, and the product is fully compatible with latex and polyisoprene. Because it is a glycerin-free gel, it may dry faster than silicone options, but the slip can be reactivated with a drop of water.
The preservation system ensures stability, though users with a history of reactivity to isothiazolinone should note its presence. The formula is non-staining and washes out easily from all fabrics.