Table 4.
Class | Concentration (%) | Example | Uses |
---|---|---|---|
Phospholipids | 0.5–10 | Phospholipon 90G, 90H, 80H, Lipoid S100, S75, S75–3, E80 Dipalmityl phosphatidylcholine, Distearyl phosphatidylcholine |
Vesicle forming unit |
Edge activators/surfactant or permeation enhancer |
10–50 of the totals phospholipid concentration |
Tween 60, 80, 20 Span 80, 60, 40, 20 Cremophor RH-40 SPACE (skin penetrating and cell entering peptide) Oleic acid, Sodium cholate, Deoxy sodium cholate, Dimethyl sulfoxide |
Increase the skin permeability or act as a penetration enhancer |
Alcohol | 20–50 | Ethanol, Isopropyl alcohol | For providing the softness for vesicle membrane As a penetration enhancer |
Glycol | Propylene glycol (p.G.) Transcutol RTM | Permeation enhancer | |
Cholesterol | 0.1–1 | Cholesterol | Gives stability and rigidity to vesicle |
Dye | q.s. | Rhodamine-123 Rhodamine red Fluorescence Isothiocyanate (FITC) 6-Carboxy fluorescence |
Characterization study |
Vehicle | q.s. | Carbopol, etc. | Ac as gel former |