- 1. Unable to understand and sign informed consent form 2. Unable to comply with study procedures 3. Pregnant or lactating 4. Prior treatment to forearms including topical retinoid, laser treatment, photodynamic treatment, prescription topical agents x 1 month 5. Active skin conditions that precluding treatment including zoster, blistering skin disease, psoriasis, atopic dermatitis, abnormal scarring, skin cancer in the area of study treatment 6. Currently on hormone based therapy (both systemic and topical)