When buyers measure a £11.63 Korean sunscreen against La Roche-Posay, you would expect the French pharmacy favourite to win on finish and the challenger to win on price. In the reviews for Beauty of Joseon's Relief Sun, it goes the other way. Kiren changed over from La Roche-Posay and stayed because "your skin still feels like your skin". Céline, who had used La Roche-Posay before, called it "good but quite expensive, and I personally prefer this one". The listing sits at 4.6 stars across 11,828 ratings, and in the 100 most recent verified reviews we read, the praise keeps circling one point: this SPF 50+ behaves like a moisturiser, not a sun cream. The verdict is not unanimous, though. Five reviewers report a white cast the marketing says does not exist, most of them buyers with deeper skin tones, one woman's face burnt in 20C weather despite reapplying, and another watched it pill under her makeup. This review sorts out which experience you are likely to have.

The switchers: buyers who left La Roche-Posay and stayed

Brand-switch stories are the most useful reviews on any listing, because the reviewer has a benchmark. This listing has several.

Kiren moved over from La Roche-Posay and found the two roughly level on price, but not on feel: "I prefer the finish on this as your skin still feels like your skin." She also notes it left no white cast on her brown skin and was cheaper on Amazon than other retailers.

Céline arrived from a different direction. Other SPFs were clogging her pores and causing breakouts, and this one stopped that. She had used La Roche-Posay too: "good but quite expensive, and I personally prefer this one". Easier to apply, more nourishing on her dry skin, better value, in her words.

Then there is OrdinaryGirl, whose five-star review is the longest on the listing. She describes two decades of disappointing facial sunscreens, from Clinique's City Block in the early 2000s to La Roche-Posay's Anthelios, none of which looked natural under makeup. Starting tretinoin forced her into daily SPF, a colleague recommended this tube, and she was, in her own capitals, DELIGHTED. "It is an effective sunscreen but the biggest joy for me is that you can wear make-up over it and it doesn't pill or flake!"

That is the pattern worth noticing: these are not first-time sunscreen buyers being easily pleased. They are people who had already paid for the premium option and chose not to go back.

What you get for £11.63

The tube holds 50ml of SPF 50+ PA++++ sunscreen built around two signature ingredients: rice extract and probiotics. It protects against both UVA and UVB, and the listing pitches it as lightweight, non-comedogenic and suitable for oily, acne-prone and sensitive skin. The two boldest claims on the page, no white cast and no eye sting, are exactly the ones the reviews argue about, so we will take each in turn below.

A couple of practical notes from buyers first. H. confirms the packaging arrives properly sealed: the outer box is sealed at one end and the tube itself has a foil seal, which matters when you are buying skincare on a marketplace. On quantity, Ellie Bostock loves the cream but points out the mixture is thin and she needs a fair amount to cover her whole face, leaving her unsure how long one tube would stretch through midsummer. EM makes the related point that you need the full recommended dose to actually get the stated SPF. Both are worth factoring in: 50ml is a face-only size, not a beach bottle.

At £11.63, that puts it in an odd middle ground, more than a supermarket sun cream per millilitre, but cheaper than most premium facial SPFs. Katy, a repeat buyer, notes the price "is usually always cheapest on here compared to in stores".

Under makeup: fancy primer or pilling mess?

For the target buyer of this product, a woman wearing it under foundation every day, this is the section that matters most. The good news heavily outweighs the bad.

OrdinaryGirl, late 40s and on tretinoin, gives the most detailed account: the layer is so fine it feels like almost nothing, and with foundation on top "it just glides on as though you've used a fancy primer". Katy calls it "really nice under makeup (undetectable)", S found it "very glowy and amazing under makeup", and Kiran, who has mature and sensitive skin, even pats it on over her makeup later in the day to refresh dry patches.

The bad news comes from Clare, one of the five one-star reviews: "Even the smallest amount pills badly. Looks awful under make up when its all rolling up all over your face." She has normal skin and an established routine, and bought it on the strength of the reviews, so her frustration is understandable. Muireann's five-star review may explain the gap: it is very good under makeup, she says, but you have to let it dry fully before applying anything on top or it separates. If you try this, give it a minute before your foundation.

And the eye-sting claim holds up unusually well. Four reviewers raise it unprompted, all in the product's favour. Belle50 is the most emphatic: "Best sunscreen I've tried...and I've tried lots. THIS DOES NOT STING MY EYES!" A M Collett says it never stings, ever. Even abid ramzan, whose review is mostly a complaint, concedes it does not sting the eyes.

The white cast disagreement, skin tone by skin tone

The listing says no white cast. Five reviewers say otherwise, and they are concentrated among buyers with deeper skin tones. Jm is blunt: "Leaves a bad white cast on black skin." Hidayah's one-star review says simply "Leaves white cast". Zubeyr found it left a white coat on the skin, Pfanuel Tong saw a cast on the face, and abid ramzan was the most specific: "I have light brown skin and it definitely left a white cast. Maybe if you're white or East Asian it won't but for me it's a no."

Read in isolation, that looks damning. But an almost equally specific group of reviewers with brown and black skin report the opposite. A Kindle Customer opens her five-star review with "Black girl friendly" and finds no cast if blended properly. Saurabhp13 says it is "nice and sheer" and "doesn't leave white marks on brown/dark complexion skin". P J writes: "The cream absorbed nicely into my skin without leaving an ashy residue on my face. As a woman of colour, this is important." sophie t. reports no white marks, and R saw "no white cast whatsoever" on a medium skin tone, even layered.

So the sample splits. Blending technique seems to be part of it: George Stock, a happy buyer, notes it can leave white streaks in skin folds until smoothed in. Our reading is that the no-cast claim is reliable for light to medium tones and a coin flip on deeper tones, which is more nuance than the marketing offers. If you have deep skin, buy it knowing a visible cast is a real possibility, and blend more thoroughly than you think you need to.

Sensitive, oily and spot-prone skin: how it behaved

The brand aims this formula squarely at reactive skin, and most of the evidence backs it. Ella, who has sensitive skin and struggles to find suitable products, found it light, absorbed within seconds, free of any strong smell and not greasy. Mrs W calls it brilliant for sensitive skin. Joanna C has used it daily since a fractional CO2 laser treatment, about as fragile as facial skin gets, and reports it absorbs easily with no scent and no white mask effect.

Oily and spot-prone buyers are well represented too. Sheharyar Ahmed, on his second or third tube at least ("I've used multiple tubes"), sums it up: "It's lightweight and non greasy. Perfect for the oily skin." Helen is prone to spots and still recommends it as a sensitive-skin sun cream: "It rubs straight into the skin, looks so glowy but feels light and not greasy." H. goes further, calling it the only sunscreen that does not make her break out or leave a cast.

Now the exceptions, because they exist and they matter. Emily Lingard gave it five stars for the glass-skin glow but admits "it does cause spots for me personally". Mari got a rash on her face and called it a waste of money. And MELISSA's one-star review is the most serious on the listing: "2 days in a row my face burnt while using this in early 20c weather", despite reapplying through the day and being a meticulous year-round sunscreen user. These are a small minority of the 100 reviews, but no sunscreen suits every face, and the only way to know is a patch test and a cautious first week.

Should this be your everyday SPF?

The strongest signal in this review set is repeat purchase. Jules is "on my 3rd tube". User098 has "repurchased several times now". Katy buys it again and again, Sheharyar Ahmed has gone through multiple tubes, and A M Collett has already decided she "will buy again". Daily-wear sunscreen is a product people abandon at the first annoyance, so a listing full of third tubes says more than any single rave.

For context on the one-star column: there are five one-star reviews in the hundred, and one of them, Peter Gray's, opens with "Good product" and is actually a complaint about delivery. The product-related failures are the pilling, the rash, the sunburn and the white cast covered above.

Our take: at £11.63 this is one of the easiest skincare recommendations we have made this year, with two caveats. If you have a deep skin tone, the white cast reports are frequent enough that you should treat the first tube as a trial. And whoever you are, let it dry before your foundation goes on. For light to medium tones wanting an SPF 50+ that feels like moisturiser, does not sting the eyes and sits invisibly under makeup, the 83 five-star reviewers in this sample are hard company to bet against. We rate it 4.6 out of 5, exactly where its 11,828 Amazon ratings put it.

Beauty of Joseon Relief Sun Rice Probiotics SPF 50+ PA++++ (50ml)

The K-beauty daily sunscreen that feels like moisturiser: no eye sting, no grease, and a glow that sits beautifully under makeup.