Transdermal patches (adhesive patches placed on the skin) may also be used to deliver a steady dose through the skin and into the bloodstream. Testosterone-containing creams and gels that are applied daily to the skin are also available, but absorption is inefficient (roughly 10%, varying between individuals) and these treatments tend to be more expensive. Individuals who are especially physically active and/or bathe often may not be good candidates, since the medication can be washed off and may take up to six hours to be fully absorbed. There is also the risk that an intimate partner or child may come in contact with the application site and inadvertently dose himself or herself; children and women are highly sensitive to testosterone and can suffer unintended masculinization and health effects, even from small doses. Injection is the most common method used by individuals administering AAS for non-medical purposes. 
Other combination therapies may lack convenience but are also effective. In the patient with comedones and inflammatory lesions, a comedolytic agent such as tretinoin, adapalene or azelaic acid may be combined with benzoyl peroxide or a topical antibiotic. The combination of clindamycin and tretinoin causes less irritation than tretinoin alone. 30 In using tretinoin and the benzoyl peroxide–erythromycin combination together, the patient should alternate the products daily for two weeks to minimize irritation. When agents that cause irritation are used, patience is necessary, but the results may be well worth the wait.
The doctor may suggest hospitalization simply because it may be necessary to break the cycle of chronic inflammation, or other problems that are exacerbating the illness. Frequently, five or six days of vigorous in-hospital treatment care can result in a dramatic clearing of the eczema. Food tests, allergy skin testing, and the development of an outpatient therapy plan can all be done during the hospitalization. Unfortunately, getting approval from insurers is often difficult. During an acute flare the number of 15-20 minute baths must be increased to three or four per day. Besides hydrating the skin, baths also increase the penetration of topical medication up to ten-fold if the medicine is applied immediately after the bath. Wet wraps after baths may also help hydration and medicinal penetration. Bedtime wet wraps are most practical, and can be done with elasticized gauze followed by ace bandages or double pajamas. (The first pair of pajamas is worn damp but not soaking wet, and a second pair of dry pajamas is worn over them. For a tighter fit, sometimes a plastic sauna suit is used instead of the dry pajamas.) For feet and hands, socks can be used. Additional blankets or increased room heat may be necessary during this three to seven days to prevent chilling.