
“Beauty sleep” is a well known concept, and it is more than just a saying: research has proven the positive effects that a good night’s sleep can have on our appearance. The skin has its own circadian rhythm - our biological 24-hour clock - and enters its most active phase of repair and regeneration at night. Supporting this process with skincare designed for night, with clinically proven formulas, can transform the quality of your skin.
PM Skin Repair: Why Nighttime Is When Your Skin Truly Renews
While you sleep, your skin doesn’t simply rest; it enters its most powerful repair and renewal phase. Guided by your circadian rhythm, this overnight process determines how youthful, resilient, and radiant your skin appears.
Cellular Renewal Peaks at Night
Between 11PM and 2AM, your skin reaches its highest level of cellular activity. DNA repair accelerates, oxidative stress is counteracted, and cell turnover increases to undo the visible impact of environmental aggressors such as UV radiation and pollution.
Barrier Strength and Hydration
As you sleep, the skin barrier becomes more permeable. This allows for greater transepidermal water loss - which is why skin loses the most moisture overnight - but it also creates the perfect opportunity for targeted actives to penetrate more deeply. This is why nighttime is the most effective moment for advanced skincare and treatment formulas. It’s also why nighttime formulas tend to have especially rich, restorative textures; to replenish lost hydration while enhancing repair.
The Sleep Hormone: The Role of Melatonin
Melatonin, the hormone that governs circadian rhythm, also plays a vital role in skin repair. With age, natural melatonin production declines, reducing the skin’s capacity for overnight renewal. This decline is one of the key accelerators of visible ageing. Harnessing bio-identical or plant-based melatonin in skincare - such as that found in our Phytomelatonin Rejuvenating Serum can help restore this natural rhythm, supporting repair at the cellular level.
Why Nighttime Skincare Matters
During the day, lightweight protective formulas like SPF and antioxidants are vital. But at night, your skin requires something different: products that work in harmony with its natural repair processes, replenishing lost moisture and supporting regeneration at the deepest levels. By aligning your skincare ritual with your circadian rhythm, you can maximise your skin’s ability to repair itself.
Two Routines to Maximise Your Skin’s Nighttime Power
Irene’s Regenerating Night Routine
Phytomelatonin Rejuvenating Serum and Hibiscus Night Cream are clinically proven to target 7 signs of ageing and lock in hydration while skin is naturally in repair mode. Enjoy a $115 savings on this limited-edition duo.
Wrinkle-Smoothing PM Travel-Size Kit
A rejuvenating 4-step evening ritual in luxury travel sizes, clinically proven to support overnight skin regeneration - including the much-loved Phytomelatonin Rejuvenating Serum and Hibiscus Night Cream, paired with Almond Cleansing Milk and Helichrysum Toner for a gentle, hydrating yet powerful complete nighttime routine - with a 20% saving on the products included.
The Secret to Waking Up Radiant
More than a ritual, your nighttime skincare is a chance to supercharge your skin’s most critical repair window. By combining high-performance actives with deeply hydrating textures, you can offset moisture loss, reinforce your barrier, and support the natural processes that occur while you sleep.
Because beauty sleep isn’t merely a saying - it’s a science-backed, naturally powerful process.

