understanding your circadian rhythm
Posted on 01/03/2020
Your 'body clock' is a real thing. The circadian rhythm is our very own, autonomous, biological clock (several, to be exact) and is responsible for programming our bodily functions to be more efficient at certain times of the day. It regulates vital systems like temperature, metabolism, hormone release, cognitive patterns and - importantly - sleeping.
We have worked with a number of experts in the field of circadian rhythm to understand how it affects our skin and daily life over a 24-hour period, so we can ensure our products are delivering exactly what you (and your skin) need at the right time.
our circadian rhythm controls...
During sleep the epidermal (skin) stem cell produces cells that replace the aged ones. This generally occurs late at night or early in the morning, while we are resting and our bodies are not disturbed. It's one of the reasons our skin can appear more attractive in the morning.
THE SKIN BARRIER
Known as the lipid barrier, this is one of your body's first lines of defence against environmental aggressors and microorganisms. Your skin cycle changes throughout the day in order to protect and defend against various different elements – for example, in the morning your skin is more sensitive.
Throughout the day, the skin's water content fluctuates. Trans-epidermal water loss peaks overnight, and makes the skin more permeable to topical treatments. That is why this is the best time for applying skincare products and allowing them to work their magic.
Sebum is produced by your sebaceous glands to lubricate the skin and hair, making them waterproof. When too much builds up and sits on your skin, it can cause blocked pores and result in acne. Sebum excretion is at its highest around midday and lowest upon waking or late in the evening.
Whether you're a morning person or night owl is also down to your biological clock (circadian rhythm). It controls your sleep / wake-up cycles and is determined by specific genes, but also affected by age.
NIGHT 11PM - 6AM
sleep & repair
- Repair mode is activated
- Dehydration is at its highest due to trans-epidermal water loss
- Production of Melatonin (the sleep hormone) peaks
- Anti-inflammatory and anti-stress hormones are released
WAKE-UP 6AM - 9AM
correct & protect
- Trans-epidermal water loss means your skin is dehydrated
- This dehydration may impair the function of your lipid barrier
- UV damage is more likely
EVENING 6PM - 11PM
detox & renew
- Getting ready for night mode
- Melatonin (the sleep hormone) starts to increase
- Skin is at its most hydrated
- DNA repair takes place