Which route of administration involves skin contact and requires careful consideration of skin compatibility?

Which route of administration involves skin contact and requires careful consideration of skin compatibility?

• A. cutaneous
• B. oral
• C. inhalation
• D. intravenous

Answer: (A)

Dermal (cutaneous) exposure involves applying or touching a substance with the skin, so the main concern is how the skin barrier handles it. The skin can be irritated or sensitized, and certain chemicals can penetrate the outer layers and reach systemic circulation depending on solubility, molecular size, and the solvents or vehicles used. Because of this, evaluating skin compatibility is essential: you assess the potential for irritation or corrosion, the risk of allergic contact dermatitis, and whether formulation components might disrupt the skin’s barrier and increase absorption. Topical products and transdermal systems exemplify this route and highlight why skin compatibility matters. Other routes—oral, inhalation, and intravenous—do not primarily involve direct skin contact, so skin compatibility isn’t the central concern for them.

Dermal (cutaneous) exposure involves applying or touching a substance with the skin, so the main concern is how the skin barrier handles it. The skin can be irritated or sensitized, and certain chemicals can penetrate the outer layers and reach systemic circulation depending on solubility, molecular size, and the solvents or vehicles used. Because of this, evaluating skin compatibility is essential: you assess the potential for irritation or corrosion, the risk of allergic contact dermatitis, and whether formulation components might disrupt the skin’s barrier and increase absorption. Topical products and transdermal systems exemplify this route and highlight why skin compatibility matters. Other routes—oral, inhalation, and intravenous—do not primarily involve direct skin contact, so skin compatibility isn’t the central concern for them.