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Knours Koolsol Ultra Light Invisible Mineral Sunscreen SPF50 50ml, pale yellow bottle, front
Knours Koolsol Ultra Light Invisible Mineral Sunscreen SPF50: white sunscreen squeezed from the nozzle of the pale yellow bottle
Knours Koolsol Ultra Light Invisible Mineral Sunscreen SPF50, bottles and boxes grouped together
Knours Koolsol Ultra Light Invisible Mineral Sunscreen SPF50 50ml, pale yellow bottle, front
Knours Koolsol Ultra Light Invisible Mineral Sunscreen SPF50: white sunscreen squeezed from the nozzle of the pale yellow bottle
Knours Koolsol Ultra Light Invisible Mineral Sunscreen SPF50, bottles and boxes grouped together

Knours

Koolsol Ultra Light Invisible Mineral Sunscreen SPF50 (50ml)

  • £26.99
Knours Koolsol Ultra Light Invisible Mineral Sunscreen is a Broad Spectrum SPF 50 sunscreen that uses 10% zinc oxide as its only UV filter. It has a light, essence-like texture that Knours describe as invisible, with niacinamide, panthenol, snow mushroom and centella for comfort. What it doesZinc oxide sits on the skin and protects against both UVB, the rays that burn, and UVA, the rays linked to dark spots and skin ageing. Niacinamide, panthenol, snow mushroom and centella keep skin hydrated and calm-feeling underneath. Why we chose itWe wanted a mineral SPF for people who prefer zinc oxide to chemical filters. This one is a fluid rather than a thick cream, so it is easy to wear as a daily morning layer. Best forPeople who prefer mineral (zinc oxide) sunscreenSensitive skin that finds chemical filters uncomfortableNormal, combination or oily skin that wants a light layerDaily protection when using retinal, acids or brightening serumsNot ideal ifYou avoid fragrance: it lists ethylene brassylate, a musk-type scent ingredient, and clove bud extract. Purito Wonder Releaf Centella Daily Sun Lotion has no fragranceYou dislike any cast: zinc oxide can look slightly whitish on deeper skin until it settles, so apply thin layersYou swim or sweat heavily: water resistance is not stated, so reapply afterwardsKey ingredientsZinc oxide 10%: the only UV filter, for UVA and UVB protectionNiacinamide: helps even tone and support the barrierPanthenol and tremella (snow mushroom) extract: hydrationCentella asiatica extract, madecassoside and asiaticoside: a calm, comfortable feelTexture and finishA lightweight, essence-like fluid with a smooth, non-greasy finish. Shake well before each use. Where it goes in your routineMornings, as the last skincare step: after moisturiser, before makeup. Shake well, then apply liberally to face and neck at least 15 minutes before sun exposure, as Knours direct, and reapply at least every two hours when you are outdoors. Good to knowSPF measures protection from UVB. This sunscreen is labelled under US rules, so instead of a PA rating it says Broad Spectrum, which means it has also passed a UVA test. Quick facts: 50 ml · Mineral SPF 50, 10% zinc oxide · Broad Spectrum · Shake well · AM only · Knours, Korean brand
Read more
  • Mineral SPF 50 with 10% zinc oxide
  • Light, essence-like fluid; shake before use
  • Niacinamide, panthenol and centella for comfort
  • Contains a scent ingredient and clove extract
Helps with
Sun protectionMineral SPFSensitive skinDaily SPF
Best for
NormalOilyCombinationSensitive

Currently out of stock

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What customers say

5.0 ★ · 4 reviews

  • Very nice SPF. It applies easily and feels very light. Interestig smell which i actaully like.

    Annie G.

  • I love it! It’s lightweight , non greasy and doesn’t leave a white cast on my face. Clean skin care product, ewg certified and doesn’t wreck my hormones. I have my husband using it too to make sure his face is safe :-)

    Vera

  • This is the best sunscreen I have ever used.

    Amaia M.

  • This sunscreen feels like nothing when you put it on — super lightweight and hydrating, no white cast, dries smooth. works great under makeup too. only minus is the scent—kinda off, but it’s worth it for how good this performs.”

    Carla M

Knours Koolsol Ultra Light Invisible Mineral Sunscreen is a Broad Spectrum SPF 50 sunscreen that uses 10% zinc oxide as its only UV filter. It has a light, essence-like texture that Knours describe as invisible, with niacinamide, panthenol, snow mushroom and centella for comfort.

What it does

Zinc oxide sits on the skin and protects against both UVB, the rays that burn, and UVA, the rays linked to dark spots and skin ageing. Niacinamide, panthenol, snow mushroom and centella keep skin hydrated and calm-feeling underneath.

Why we chose it

We wanted a mineral SPF for people who prefer zinc oxide to chemical filters. This one is a fluid rather than a thick cream, so it is easy to wear as a daily morning layer.

Best for

  • People who prefer mineral (zinc oxide) sunscreen
  • Sensitive skin that finds chemical filters uncomfortable
  • Normal, combination or oily skin that wants a light layer
  • Daily protection when using retinal, acids or brightening serums

Not ideal if

  • You avoid fragrance: it lists ethylene brassylate, a musk-type scent ingredient, and clove bud extract. Purito Wonder Releaf Centella Daily Sun Lotion has no fragrance
  • You dislike any cast: zinc oxide can look slightly whitish on deeper skin until it settles, so apply thin layers
  • You swim or sweat heavily: water resistance is not stated, so reapply afterwards

Key ingredients

  • Zinc oxide 10%: the only UV filter, for UVA and UVB protection
  • Niacinamide: helps even tone and support the barrier
  • Panthenol and tremella (snow mushroom) extract: hydration
  • Centella asiatica extract, madecassoside and asiaticoside: a calm, comfortable feel

Texture and finish

A lightweight, essence-like fluid with a smooth, non-greasy finish. Shake well before each use.

Where it goes in your routine

Mornings, as the last skincare step: after moisturiser, before makeup. Shake well, then apply liberally to face and neck at least 15 minutes before sun exposure, as Knours direct, and reapply at least every two hours when you are outdoors.

Good to know

SPF measures protection from UVB. This sunscreen is labelled under US rules, so instead of a PA rating it says Broad Spectrum, which means it has also passed a UVA test.

Quick facts: 50 ml · Mineral SPF 50, 10% zinc oxide · Broad Spectrum · Shake well · AM only · Knours, Korean brand

  • Shake well before every use, as Knours direct.
  • Mornings, as the last skincare step: after moisturiser, before makeup.
  • Apply liberally to face and neck at least 15 minutes before sun exposure. Using too little lowers the protection you get.
  • If you notice any cast, apply the full amount in two layers, letting the first settle before the second.
  • Reapply at least every two hours outdoors, and after swimming, sweating or towel drying. Water resistance is not stated.
  • If you use retinal, exfoliating acids or brightening serums, make daily sunscreen a fixed habit.

Zinc Oxide (10%), Water (Aqua), Isoamyl Laurate, Propanediol, Butyloctyl Salicylate, C13-15 Alkane, Niacinamide, Sodium Polyacryloyldimethyl Taurate, Lauryl Glucoside, Polyhydroxystearic Acid, Polyglyceryl-6 Laurate, Silica, Ethyl Ferulate, Hydrogenated Lecithin, Polyglyceryl-6 Polyricinoleate, Tocopheryl Acetate, Ethylene Brassylate, Hydroxyacetophenone, Myristyl Glucoside, Pongamia Pinnata Seed Extract, Caprylyl Glycol, Eugenia Caryophyllus (Clove) Bud Extract, Solidago Virgaurea (Goldenrod) Extract, 1,2-Hexanediol, Phenoxyethanol, Biosaccharide Gum-4, Panthenol, Tremella Fuciformis Sporocarp Extract, Glycerin, Butylene Glycol, Centella Asiatica Extract, Madecassoside, Aloe Barbadensis Leaf Juice Powder, Asiaticoside

Good to know

  • Mineral filter only: zinc oxide 10%
  • Contains ethylene brassylate (a scent ingredient) and clove bud extract
  • No retinoid and no exfoliating acids
  • Water resistance not stated: reapply after swimming or sweating

Does it leave a white cast?

Knours call it invisible, and most of the reviews we checked report no obvious cast. Zinc oxide can still look slightly whitish on deeper skin until it settles, so building it up in two layers helps. We have not seen enough feedback across deeper skin tones to promise it looks invisible on everyone.

Is it a mineral-only sunscreen?

Yes. Zinc oxide (10%) is the only UV filter. You may notice butyloctyl salicylate in the ingredients: it is used as an emollient here and is not one of the approved UV filters.

Does it have a scent?

It lists ethylene brassylate, a musk-type scent ingredient, and clove bud extract. A few reviews we checked mention a noticeable smell they did not like. If you avoid fragrance, Purito Wonder Releaf Centella Daily Sun Lotion has no fragrance.

Is it suitable for sensitive skin?

It can be, if chemical filters are what bother your skin: zinc oxide is the only UV filter here. It does contain a scent ingredient and clove bud extract, so if fragrance is one of your triggers, patch test first or choose a fragrance-free sunscreen.

Is it water-resistant?

Water resistance is not stated, so treat it as not water-resistant. Reapply after swimming, sweating or towel drying, and at least every two hours outdoors.

UK Delivery

Orders under £25
Shipping: £2.99
Service: Royal Mail Tracked 48

Orders £25 and over
Shipping: FREE
Service: Royal Mail Tracked 24

Dispatch & Delivery Times

  • Orders placed before 1pm Monday to Friday are dispatched the same working day.
  • Orders placed after 1:00 PM are dispatched the next working day.
  • Royal Mail Tracked 48 typically delivers within 2 working days.
  • Royal Mail Tracked 24 aims for next working day delivery.

So for orders £25 and over placed before 1pm on a working day:

Order before 1pm → dispatched same day → Royal Mail Tracked 24 aims to deliver the next working day.

Please note that delivery times are estimates and may occasionally vary during busy periods, bank holidays or due to Royal Mail delays.

Koolsol Ultra Light Invisible Mineral Sunscreen SPF50 (50ml)

£26.99