Increased bioavailability of hydrocortisone dissolved in a cream base

Area of Science:

• Dermatology
• Pharmacology
• Cosmetic Science

Background:

• Topical hydrocortisone is a common anti-inflammatory agent.
• Formulation differences can impact drug delivery and efficacy.
• Comparing dissolved versus dispersed hydrocortisone is crucial for optimizing treatment.

Purpose of the Study:

• To compare the vasoconstrictor activity and anti-inflammatory effectiveness of 1% dissolved hydrocortisone cream versus 1% dispersed hydrocortisone cream.
• To evaluate the moisturizing capacity of the dissolved hydrocortisone formulation.
• To assess the safety of both hydrocortisone formulations.

Main Methods:

• Two topical hydrocortisone formulations (1% dissolved and 1% dispersed) were applied without occlusion.
• Vasoconstriction was assessed using an objective rating scale in a double-blinded manner.
• Moisturizing capacity was measured via transepidermal water loss (TEWL) and water content.
• Safety was evaluated using repeat insult patch tests (RIPT).

Main Results:

• The 1% dissolved hydrocortisone cream showed significantly greater vasoconstrictor activity than the 1% dispersed formulation.
• The dissolved hydrocortisone cream demonstrated statistically superior potency.
• The dissolved formulation exhibited moisturizing properties, unlike the dispersed form.
• No adverse events were reported for either formulation.

Conclusions:

• 1% dissolved hydrocortisone cream possesses enhanced vasoconstrictor activity compared to 1% dispersed hydrocortisone cream.
• The dissolved formulation offers superior anti-inflammatory potential and moisturizing benefits.
• Both formulations were found to be safe for topical application.