#1 The Strengthening Serum (Formerly #1 The Serum)
This strengthening serum supports skin barrier function with a proprietary B-Group Vitamin Complex, including niacinamide, restoring radiance as it amplifies hydration. Ideal as part of your morning routine, niacinamide helps to visibly even the appearance of skin tone and improve skin clarity.
Use in the AM
New Names, Same Favourite Formulations
In the coming weeks and months, you’ll begin to see a shift in how our formulations and collections are named and presented on our packaging.
This change is small, but significant—and intended to support client navigation, education, and discoverability when it comes to exploring the RATIONALE range. It’s an evolution we’re proud to be bringing you on.
The Results
91%
reported improved skin hydration.
82%
saw a boost in radiance.
82%
experienced enhanced skin nourishment.
*Based on a 56-day trial with 22 participants
The Ritual
The first step in your daytime routine.
Smooth 2-3 drops gently over face, neck and décolletage.
In Synergy With
#3 The Brilliance Tinted Serum SPF50+
Benefits
Illuminates, Evens tone, SPF50+ protection,
Suited To
All skin,
#2 The Serum
Benefits
Hydrates, Visibly brightens, Evens tone,
#6 The GelCrème
Benefits
Enhances radiance, Visibly firms, Evens tone, Hydrates,
#3 The Enriched Crème SPF15
Benefits
Nourishes, SPF protection, Visibly calms,
The Research
The skin has its own immune system, with specialised tissues and cells playing a vital role in preventing environmental damage, allergy and disease.
The concept of skin immunity and beauty are exquisitely linked, with a healthy, resilient skin reflected in a clear and even complexion.
The vital processes of cell-to-cell communication and skin barrier function are supported by B-group vitamins and the phospholipid-protein structures of skin’s outermost layer, the Stratum Corneum.
The Ingredient Complexes
Frequently Asked Questions
#1 The Strengthening Serum is applied first in your morning (AM) ritual, before Hydragels and Crèmes, and after rinsing your skin with warm water.
Yes, #1 The Strengthening Serum is suitable for all skin types.
This unique Complex of B-Group Vitamins boosts skin immunity by enhancing the resilience of skin cells and strengthening the barrier function. Skin appears calmer as redness and irritation are reduced.
The key ingredients in #1 The Strengthening Serum include a B-Group Vitamin Complex including Niacinamide, with a combination of strengthening vitamins and peptides.
Niacinamide strengthens the skin’s barrier, enhances immunity, and restores resilience. With its anti-inflammatory properties, niacinamide visibly soothes redness and brightens uneven skin tone for a healthier complexion.
The B-group Vitamin Complex found in the Resilience Collection delivers a broader range of benefits to the skin compared to Niacinamide alone. This enhances the Formulation's ability to target various skin types and conditions.
Yes, we’re excited to introduce #1 The Strengthening Serum 15mL travel size as a permanent offering.
#1 The Strengthening Serum supports skin barrier defence with a Complex of B-Group Vitamins, while #2 The Serum defends skin from oxidative stress with a Complex of Antioxidants. It is recommended to use one Formulation from #1 The Resilience Collection and one from #2 The Vitality Collection to optimise skin health.
A serum is primarily water-based, offering a light consistency and quick delivery. On the other hand, hydragels, although lightweight, contain a combination of water and oil, resulting in a slower delivery in comparison.
Yes, #1 The Strengthening Serum can be used during pregnancy and breastfeeding, especially for those experiencing signs of dehydration, blemishes, and congestion.