By : Jennifer Brodeur.

There is a window in May that most people miss and it’s one of the most strategically important months in the skin care calendar. By the time June arrives and skin is suddenly exposed to prolonged sun, social events, gardening and outdoor living, the opportunity for real preparation has already passed. True summer readiness is built in the weeks before.

The Ideal Time for Targeted Treatments

In May, the UV index climbs steadily but hasn’t yet reached its summer peak, making it the ideal time to begin targeted treatments without the risk of photosensitivity complications. It’s also the right moment to address textural irregularities. At home, a gentle exfoliant containing lactic acid (5–10%) used one or two times a week will refine surface texture while respecting the skin barrier far more effective than harsh physical scrubs.

Rebuilding Hydration from Within

Hydration is the other priority. After winter’s dehydration cycle, the skin’s aquaporin channels and hyaluronic acid reserves need active replenishment, not just surface moisture. Look for serums layering low- and high-molecular-weight hyaluronic acid together with niacinamide. This combination restores water retention, calms redness, and begins the evening of skin tone before summer heat amplifies any existing unevenness.

Simple Habits That Make a Difference

A few small habits make a real difference this month: apply SPF every morning (yes, even on cloudy days), add a facial mist with glycerin to your midday routine, and swap any heavy creams for a lighter, barrier-supporting moisturizer as temperatures rise.

The effort you invest in your skin this month will determine its resilience, radiance, and response to everything summer brings.

Jennifer Brodeur is the author of La peau et ses secrets. She specializes in skin physiology and cosmetology, and has worked in the beauty industry for 30 years as a teacher and entrepreneur.