The numbuzin No.4 Icy Soothing Sheet Mask is a Korean skincare product designed to provide an immediate cooling sensation and hydration for the skin. Each box contains five sheets, each pre-soaked in a serum formulated with tea tree extract and bergamot leaf extract, both known for their soothing properties. Tea tree extract is commonly used in skincare for its ability to calm irritated or heated skin, while bergamot leaf extract contributes to a refreshing and comforting effect. The mask aims to relieve discomfort associated with skin that feels overheated, such as after sun exposure or during warmer weather.

The formula is built around a lightweight, water-based texture that absorbs without leaving a sticky residue, making it suitable for various skin types, including oily and combination skin. It focuses on delivering moisture while reducing the appearance of redness or sensitivity without relying on heavy oils or artificial fragrances. The instant cooling effect is achieved through physical and ingredient-based means, helping to lower skin temperature and provide a soothing sensation during wear.

This sheet mask is particularly relevant for individuals seeking a gentle, non-irritating option to refresh and hydrate their skin in specific scenarios, such as after outdoor activities, during seasonal transitions, or when the skin feels stressed from environmental factors. It does not promise dramatic or permanent changes but serves as a targeted treatment for temporary relief and comfort. The product aligns with the Korean skincare approach of layering lightweight, ingredient-focused steps to maintain skin balance. Its affordable pricing and straightforward formulation make it accessible for regular use as part of a routine that prioritizes calm, hydrated skin without excessive additives.