Here's why:
* Formulation stability: Most cleansers are formulated to be stable at room temperature. Refrigerating them might alter their texture or effectiveness.
* No proven benefits: There's no scientific evidence that refrigerating cleanser enhances its cleansing properties.
* Potential for separation: Some cleansers, especially those with oil-based ingredients, might separate or become thicker in cold temperatures, making them difficult to use.
However, there are a few exceptions where refrigerating cleanser might be considered:
* Specific product instructions: If the cleanser's packaging or manufacturer specifically recommends refrigeration, follow those instructions. This is rare, but possible.
* Soothing effect: Some people enjoy the cooling sensation of a refrigerated cleanser, especially in hot weather. This is purely a matter of personal preference. If you like it, there's no harm in doing it, *provided* it doesn't negatively affect the product's texture or performance.
* Perishable ingredients: Cleansers with fresh, highly perishable ingredients (like some fresh-made cleansers or those without strong preservatives) might benefit from refrigeration to extend their shelf life. This is uncommon in commercially produced cleansers, but more likely in DIY or very natural formulations.
In summary: For most commercially available face cleansers, storing them at room temperature, away from direct sunlight and extreme heat, is perfectly adequate. Only refrigerate if the product specifically instructs you to do so, or if you find a specific benefit for your skin that outweighs the potential drawbacks.