Cooling skincare products like menthol gels, hydrating mists, and refreshing hydrogel masks have surged in popularity on TikTok and Instagram during intense heatwaves. According to market observations, while South Korea leads the trend with specialized face, body, and scalp formulas, the category has quickly spread to Western markets. However, research highlights a distinct difference between sensory illusions and actual skin temperature reduction.
How Menthol Triggers the Perception of Cold Without Lowering Body Temperature
The most common ingredient in cooling cosmetics is menthol, which operates by activating TRPM8 receptors responsible for cold perception, according to clinical studies. When these receptors fire, the brain receives a direct signal of freshness even though body temperature remains entirely unchanged. Research evaluating menthol-based gels showed that participants perceived a dramatic cooling effect compared to other treatments, yet tests confirmed zero modification to internal body temperature or arterial circulation.
Pro Tip: According to dermatological experts, a cooling mist or gel can significantly enhance comfort during a heatwave, but it cannot replace proper hydration, shade, or a genuinely cool environment.
Evaporative Formulas and Physical Cooling Tools Compared
Beyond menthol, formulations rich in water or alcohol create a genuine drop in skin temperature through evaporation, drawing heat away as the liquid disperses from the skin’s surface. Meanwhile, brands utilize alternative sensory agents like methyl diisopropyl propionamide (MDP), which delivers a prolonged and milder cooling sensation compared to traditional menthol. Additionally, hydrogel masks and eye patches kept in refrigerators offer physical cooling, though their benefits remain temporary and fade once the skin returns to its normal baseline temperature.
Why High Concentrations of Menthol Can Trigger Skin Irritation
Cold sensations do not equate to gentle formulations, as high concentrations of menthol frequently cause burning, stinging, or redness. The American Academy of Dermatology advises individuals prone to rosacea or compromised skin barriers to strictly avoid products containing menthol, camphor, alcohol, or heavy fragrances. Furthermore, natural peppermint essential oils carry similar sensitization risks when applied repeatedly to damaged skin.
Did You Know? Studies comparing various menthol concentrations found that while all test gels provided temporary cooling, a higher percentage of menthol did not automatically result in a better or longer-lasting temperature drop.
Frequently Asked Questions
Do cooling skincare products actually lower skin temperature?
Some formulations with water or alcohol lower surface temperature via evaporation, while menthol primarily tricks brain receptors into feeling cold without changing internal metrics.
Can I store all of my skincare products in the freezer?
No. Extreme cold can irritate reactive skin. Only store products in the refrigerator if the brand explicitly recommends it on the packaging.
Are cooling products effective for treating sunburns?
No. Cooling skincare improves immediate comfort, but it does not repair UV damage, detoxify the skin, or prevent heat stroke.
Explore our latest skincare science guides or subscribe to our weekly newsletter for more evidence-based beauty insights.