1. Water-based Products and Refrigeration in Skincare
When it comes to skincare, understanding the composition of your products is crucial. As advised by the lecturers of Diploma in Perfumery and Cosmetic Science at the School of Chemical and Life Sciences in Singapore Polytechnic, most water-based skincare items, such as lotions, serums, toners, and moisturisers, can be safely stored in the refrigerator. This practice can enhance the shelf life and efficacy of these products.
However, caution is advised with oil-based products and facial oils. These formulations, especially those containing both water and oil components, might react adversely to cold temperatures. In the fridge, these skincare formulas can turn cloudy, and the water and oil elements may separate, potentially ruining the product.
2. The Myth of Cooler Being Better
It's a common misconception that all beauty products benefit from refrigeration. However, cosmetic manufacturers test the stability and efficiency of skincare products under various climate conditions, aligning with guidelines set by the World Health Organisation. This implies that beauty products, including vitamin C serums and eye creams, purchased locally are optimized for performance at room temperature, unless specified otherwise.
3. Product Freshness and Preservation
Refrigerating skincare products can slow down bacteria growth, which is particularly beneficial for preservative-free skincare. However, refrigeration is not a substitute for proper preservation. Products like hyaluronic acid serums, clay masks, and eye creams, though they may feel more soothing when applied cool, should still be used within their expiry dates. Active ingredients, like vitamin C, may benefit from refrigeration to protect against oxidation.
4. Extended Shelf Life and Safe Storage
Water-based skincare, when chilled to about 4 degrees Celsius, can enjoy an extended shelf life. The lecturers from the Perfumery and Cosmetic Science course at Singapore Polytechnic also recommend proper labeling of refrigerated skincare products to avoid confusion with food items. This practice not only ensures the products' efficacy but also safeguards against accidental ingestion, particularly by children.
Considerations for Your Skincare Routine
While storing skincare in the fridge can provide a cooling effect, not all skincare products are suited for cold storage. For example, oil components in some serums and moisturisers may not respond well to cold temperatures, leading to changes in texture and efficacy. Additionally, products like sheet masks, designed for a soothing sensation, might benefit more from refrigeration than others.
It is important to understand which skincare product can be stored in the fridge by understanding its ingredients and properties.
Incorporating a skincare fridge into your routine can be beneficial for certain products. Distinguishing between water-based and oil-based skincare—and recognising that cooler doesn't always mean better. The goal is to maintain the product's freshness, effectiveness, and integrity, ensuring that each step of your skincare routine contributes to the health and appearance of your skin.
