Overview
Your skin is in a constant state of renewal. Every 28 days, new skin cells are formed, migrate to the surface and replace older cells — maintaining clarity, strength and radiance. This process, known as the skin cycle, plays a vital role in skin health. However, as we age and experience cumulative environmental exposure, this cycle gradually slows. Understanding how renewal works — and how to support it — is key to preserving skin vitality and long-term resilience.
What Is the 28-Day Skin Cycle?
The skin cycle refers to the journey of skin cells from their formation in the deepest layer of the epidermis to their eventual shedding from the surface. New cells are continuously produced in the basal layer, gradually migrating upward as they mature. At the surface, older cells are naturally shed, revealing fresh skin beneath. This finely balanced process takes approximately 28 days in healthy, youthful skin and is essential for maintaining smoothness, hydration and barrier integrity.
What Impacts the Skin Cycle?
In younger skin, cell turnover is rapid — contributing to clarity, luminosity and even tone. As we age, this regenerative process gradually slows, leading to dullness, dehydration, uneven texture and visible signs of ageing.
Additional factors can further disrupt renewal, including:
- UV exposure, which accelerates cellular damage
- Pollution, which increases oxidative stress
- Lifestyle habits, including stress, sleep and nutrition
- Hormonal changes, particularly during menopause, which weaken barrier function and slow regeneration.
Over time, this cumulative stress impairs the skin’s natural ability to repair and renew.
How to Support Healthy Skin Renewal
[TIP 1] — Gentle Cleansing
Effective cleansing and gentle exfoliation remove dead skin cells, impurities and excess oil — supporting optimal cellular turnover and skin clarity.
[TIP 2] — Strengthen + Hydrate
Targeted hydration and barrier-supporting actives help support elasticity, comfort and resilience as renewal slows with age.
[TIP 3] — Protect Daily
Daily comprehensive protection is essential to prevent cumulative sun damage — the leading cause of visible skin ageing.
#4 The Nourishing Cleanser
Benefits
Gently cleanses, Nourishes, Amplifies suppleness,
Suited To
All skin,
#1 The Strengthening Crème
Benefits
Hydrates, Amplifies suppleness, Nourishes,
Suited To
Dry skin,
#3 The Brilliance Tinted Serum SPF50+
Benefits
Evens tone, Illuminates, SPF50+ protection,
Suited To
All skin,
The RATIONALE Approach
Our formulations are designed to work in harmony with the skin cycle — supporting renewal, supporting barrier defence and protecting against environmental stressors. By aligning advanced formulation science with skin’s natural rhythms, we preserve skin health, function and radiance across every life stage.
Where to begin?
Discover your personalised RATIONALE ritual in minutes.
