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Altruist

Primer SPF50

Lightweight SPF50 sunscreen primer for daily UV protection and smooth makeup application.

Regular price
92 kr
Regular price
183 kr
Sale price
92 kr
Tax included. Shipping calculated at checkout.
Size

    Short expiration date: This product has a shorter expiration date (August 2026) and is therefore available in our outlet at 50% off. The product can still be safely used after this date, but we are unable to sell it beyond the stated expiration date.

    QUICK BENEFITS

    • Broad-spectrum SPF50 UVA & UVB protection
    • Layers comfortably under makeup
    • Lightweight, non-sticky finish
    • Helps keep skin feeling hydrated throughout the day
    Who it´s for

    Skin types

    • Normal Skin
    • Combination Skin
    • Dry Skin
    • Oily Skin
    • Sensitive Skin

    Concerns

    • Hyperpigmentation & Sun Damage
    • Wrinkles & Fine Lines
    • Hydration & Glow

    Routine step
    Final skincare step before makeup.

    Why it works

    Primer SPF50 combines broad-spectrum sun protection with a lightweight texture designed to sit comfortably under makeup. It helps protect skin from daily UV exposure while providing a smooth, hydrated-feeling base for foundation and other complexion products.

    Broad-Spectrum Protection
    A combination of UVA and UVB filters helps protect skin from everyday sun exposure. Daily use supports protection against sun-related visible skin damage.

    Primer-Friendly Texture
    The lightweight formula layers smoothly over skincare and under makeup. It is designed to sit comfortably on the skin without feeling heavy or greasy.

    Hydration Support
    Glycerin and moisturising ingredients help support skin comfort throughout the day. Skin feels softer and less prone to dryness during wear.

    Key Ingredients

    UV Filter Complex
    A combination of modern UV filters that provides broad-spectrum SPF50 protection against both UVA and UVB rays for daily sun defence.

    Uvinul A Plus (Diethylamino Hydroxybenzoyl Hexyl Benzoate)
    A photostable UVA filter that helps support long-lasting broad-spectrum protection against rays associated with premature visible skin ageing.

    Avobenzone (Butyl Methoxydibenzoylmethane)
    A widely used UVA filter that helps strengthen overall UVA protection while maintaining a lightweight finish.

    Glycerin
    A humectant that helps attract and retain moisture in the skin, supporting comfort and hydration throughout the day.

    How to use

    Apply an even layer to the face and neck as the final step of your morning skincare routine. Allow the formula to settle for a few minutes before applying foundation or other makeup products. Reapply regularly during sun exposure to help maintain protection.

    FAQ

    What does Primer SPF50 do?
    Primer SPF50 combines broad-spectrum SPF50 sun protection with a lightweight primer texture. It helps protect the skin from daily UVA and UVB exposure while creating a smooth base for makeup application.

    Can I use Primer SPF50 instead of a separate primer?
    For many people, yes. The lightweight texture is designed to sit comfortably under makeup and can simplify a morning routine by combining sun protection and primer-like layering support in one step.

    Who is Primer SPF50 suitable for?
    It is suitable for a wide range of skin types, including normal, combination, dry, oily and sensitive skin. It may be particularly appealing to people who want a lightweight sunscreen that layers well under makeup.

    Can I wear makeup over Primer SPF50?
    Yes. Apply the sunscreen first, allow it to settle for a few minutes, and then apply foundation or other makeup products as usual.

    Can I use Primer SPF50 with active skincare products?
    Yes. It can be applied as the final step of your morning skincare routine after serums and moisturisers. Daily SPF is especially important when using ingredients that can increase sensitivity to sun exposure.

    When will I notice results?
    The primer-like skin feel and hydration benefits are noticeable immediately after application. Sun protection works while the product is worn and applied correctly.

    Can I use Primer SPF50 during pregnancy or while breastfeeding?
    Pregnancy and breastfeeding suitability are not clearly supported for this product. If you are pregnant, breastfeeding or unsure, consult your healthcare provider before use.

    Ingredients (INCI)

    Aqua, C12-15 Alkyl Benzoate, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Butyl Methoxydibenzoylmethane, Glycerin, Dicaprylyl Ether, Ethylhexyl Salicylate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Hexylene Glycol, Diethylhexyl Butamido Triazone, Ethylhexyl Triazone, Sodium Stearoyl Glutamate, Phenylbenzimidazole Sulfonic Acid, Microcrystalline Cellulose, Caprylyl Glycol, Ethylhexylglycerin, *Xanthan Gum, Decylene Glycol, Cetearyl Alcohol, Glyceryl Stearate, Tocopheryl Acetate, Cellulose Gum, Sodium Hydroxide

    Primer SPF50 - Know To Glow
    Primer SPF50 - Know To Glow
    Primer SPF50 - Know To Glow

    Why know to glow

    Curated, science-led skincare focused on effective ingredients and real results. We select products that work with your skin, not against it.

    • QUALITY OVER QUANTITY

      Fewer products, each one worth your skin's time.

    • SCIENCE-LED

      Chosen for proven ingredients — we reject more than we stock.

    • CRUELTY-FREE

      No animal testing, ever.

    • EXPERT GUIDANCE

      Recommendations from people who read the formulas, not the hype.

    • STOCKHOLM-BASED

      Fast, reliable delivery — local roots, worldwide shipping.​​​​​​​​​​​​​​​​

    Shipping and returns

    Orders are processed within 1 business day and shipped from Stockholm, Sweden.

    Delivery time is typically 1–3 working days within Sweden. Shipping costs are calculated at checkout, with free shipping available on orders over 500 SEK.

    You have 30 days to return your order if you are not satisfied. Please contact us at hello@knowtoglow.com with your order number to start a return.

    Payments

    We offer secure and flexible payment options, including Klarna, Visa, Mastercard, PayPal, Apple Pay and Google Pay.

    All payments are processed securely using encrypted connections to ensure your information is protected.