SPF

Why is SPF protection essential?

UV radiation and environmental aggressors are the leading cause of premature skin ageing, inflammation and pigmentary concerns. Daily SPF use prevents cumulative solar damage, preserves barrier integrity and maintains long-term skin luminosity.

What are the benefits of layering SPF?

Research indicates that 80% of facial ageing is caused by the sun. Layering various forms of protection—such as UV filters, antioxidants and minerals—provides protection from the multiple forms of light that accelerate skin damage.

Do I need SPF in winter?

Yes. SPF is essential year-round. UVA rays remain constant throughout all seasons and can penetrate clouds and glass.

Does SPF expire?

Yes, SPF does expire. Over time, UV filters and supporting ingredients lose effectiveness, reducing protection. Always check the packaging for an expiry date and replace any SPF that is past its recommended period to ensure optimal defence.

Do RATIONALE SPF formulations feature chemical or mineral UV Filters?

Our SPF formulations feature mineral UV filters, which are known for their soothing properties.

What is Zinc Fusion Technology?

RATIONALE's proprietary Zinc Fusion Technology delivers sophisticated solar and environmental protection. When combined with melanin and iron oxides, this powerful trio amplifies natural luminosity within the skin, helping to reduce the appearance of redness for a more even complexion. To discover how this powerful Zinc-melanin-iron oxide complex evolved over three decades, culminating in the launch of #3 The Tinted Serum. Read about its journey and formulation story.

Do I need to use all formulations in #3 The Brilliance Collection?

We recommend using at least one formulation from each of the Essential Six Collections for remarkable skin luminosity. However, those experiencing signs of solar and environmental damage may like to use more than one from The Brilliance Collection. For a personalised skincare prescription, book a complimentary Virtual Skin Consultation with one of our talented skin experts.
Book Now

What is the Beautiful Collection?

The Beautiful Collection comprises RATIONALE’s refined formulations designed to nourish, illuminate and enhance the complexion with skin-syncing textures that melt effortlessly into the skin. These preparations elevate comfort and luminosity, completing your ritual.
Learn More