Which of the following is an agent used for deep chemical peels?
**Core Concept**
A deep chemical peel is a dermatological procedure that involves applying a solution to the skin to remove the top layers and improve its appearance. The agents used for deep chemical peels are typically strong acids that penetrate the skin to varying depths, causing exfoliation and new skin growth.
**Why the Correct Answer is Right**
Phenol is a commonly used agent for deep chemical peels due to its ability to penetrate the skin to a depth of 1-2 mm, causing significant exfoliation and stimulation of collagen production. This results in a more dramatic improvement in skin texture and appearance. Phenol works by denaturing proteins in the skin, leading to a breakdown of the epidermal and dermal layers.
**Why Each Wrong Option is Incorrect**
**Option A:** Glycolic acid is a beta-hydroxy acid used for superficial chemical peels, not deep peels.
**Option B:** Jessner's solution is a combination of resorcinol, salicylic acid, and lactic acid used for medium-depth chemical peels, not deep peels.
**Option C:** TCA (trichloroacetic acid) is used for medium-depth chemical peels, not deep peels.
**Clinical Pearl / High-Yield Fact**
Phenol is often used in combination with other agents, such as croton oil or resorcinol, to enhance its effects. However, it requires careful use and monitoring due to its potential for complications, including scarring and prolonged healing times.
**Correct Answer:** C. Phenol.