A perfect combination
This combination of lecithin and isopropyl palmitate (especially with Poloxamer 407) is useful in solubilizing and penetration enhancement. This solution is practically odorless and exhibits good spreading characteristics. Isopropyl palmitate is a solvent for many substances applied externally and is of value as a vehicle
when direct contact and penetration of the medicament are required. Lecithin is an emulsifier and absorption enhancer.