What is Undefined Beauty RNR Sun Serum SPF 50?

A tinted mineral sunscreen with SPF 50 and a lightweight serum texture, designed to protect skin from UVA and UVB rays while lightly evening out skin tone. It comes in a few shades.

Is Undefined Beauty RNR Sun Serum SPF 50 worth it?

Yes. All 4 gurus who reviewed it give it their stamp of approval, for a Guru Score of 89%.

What is Undefined Beauty RNR Sun Serum SPF 50's Guru Score?

Undefined Beauty RNR Sun Serum SPF 50 holds a Guru Score of 89%. That is our read on how warmly the experts talk about it, based on the verdicts of 4 expert reviewers we have collected. At least one expert has named it a Top Pick in its category.

What is Undefined Beauty RNR Sun Serum SPF 50 good for, according to the experts?

In their reviews, experts say Undefined Beauty RNR Sun Serum SPF 50 is good for redness (2 experts), dark spots and post-acne marks (1 expert) and rosacea (1 expert).

Is Undefined Beauty RNR Sun Serum SPF 50 good for redness?

2 experts who reviewed Undefined Beauty RNR Sun Serum SPF 50 say it is. Skin Obsessed Mary put it this way: “I do carry a lot of redness in the middle of my face so this just makes things a little bit better.”

Undefined Beauty RNR Sun Serum SPF 50: a Guru Score of 89%

What the gurus are saying.

Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.

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James Welsh

1.58M subs

✓Yay

"Probably my favorite sunscreen of all time, [...] this is a fully mineral tinted sunscreen available in three shades, it's got cica mushroom in it which is very hydrating, and niacinamide, it gives you a very natural looking glow, sometimes [...] people ask if I'm wearing makeup but it's not heavy coverage. I've been using this solidly for about 2 years now, absolutely love it, never going to stop using it."

Top Pick: sunscreen

All 5 takes from James Welsh

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"I will always, always fall back on the Undefined Beauty RNR Sun Serum. It's a mineral tinted sunscreen that makes your skin look more even dewy and glowy. People ask if I'm wearing makeup when I'm wearing this one, and they now do a few different shades. [...] If you find your skin gets irritated from sunscreens, if you have rosacea like me, and you have to keep always playing around with different sunscreens, this is a really, really nice one to go for."

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"It looks like I have really nice skin. It's slightly tinted. When I wear this, people do ask if I'm wearing makeup, but I think because it's just such a nice light, sheer coverage, more people are like, where's your rosacea gone? It's not full coverage in any way, but my skin does just look better because of that tint. It's a mineral sunscreen, so it doesn't sting my eyes in any way. [...] It's just my go-to sunscreen, all year round, all the time."

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"The Undefined Beauty RNR Sun Serum is a broad spectrum SPF 50 mineral sunscreen. It has a slight tint that now comes in a few shades, it does not sting my eyes, it does not affect my rosacea at all, and whenever I wear it people ask if I am wearing makeup because it gives a bit of [...] BB style coverage, not full coverage [...] but a nice natural finish."

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"The Undefined R.R Sun Serum is possibly one of my favorite sunscreens of not just this year but of all time so far. I've been wearing it for two and a half weeks now with absolutely no issue."

HotandFlashy

1.23M subs

✓Yay

"This one is very oil forward and it's really great for people with super dry skin. Some people, if you have more combo skin, you may find it to be just a little bit too oily feeling on your skin, but if you have really dry skin this is amazing, especially in the winter. And I love this one so much. This one is tinted, it does come in three different shades so you can find the shade match for you. It comes in a light, a medium, and a dark, and I wear the medium tint in this."

Top Pick: daily sunscreen

All 11 takes from HotandFlashy

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"So [...] I had to retest and this year it came in fourth. [...] For me it wasn't as good because it was perfect under makeup before. The old formula made my makeup last all day, no settling in wrinkles, no wearing off. The new formula goes on less wet feeling, less oily feeling than the old formula, so some people will actually like it better because it doesn't feel as wet or oily. But the problem is that it also didn't wear as well under makeup."

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"The sunscreen I'm going to use today is my Undefined RNR sunscreen, it's an SPF 50. It's 40 minutes water resistant and it has a PA rating of PA plus plus plus which tells me that it's giving me really robust UVA protection. I do like this one a lot though because it is 22 percent zinc so I think it probably does have really good UVA protection as well and UVA are really the rays that cause a lot of the aging on our skin and also causes a lot of the skin cancers."

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"As a standalone sunscreen this is just as good as it was before I'm giving it four out of five as a standalone sunscreen but only three out of five for under makeup."

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"I also have my Undefined Beauty RNR sunscreen in there. This one is water resistant to 40 minutes."

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"I have a new favorite Holy Grail sunscreen that one is the undefined r r sunscreen this is an SPF 50 PA plus plus plus this has replaced if you can believe it the Alta MD is my daily sunscreen I can't believe it I love this one for so long and love it so much I still use it quite a bit but for the average day this is the one I reach for this is one is much more lightweight and fluid."

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"My current favorite sunscreen is the Undefined R R. This is a really lightweight, fluid, liquidy sunscreen with a nice medium light to medium tint that works really well for my skin. I'm actually almost out—I go through so much of this. [...] It contains squalane and some other really nice ingredients, so it's going to be great for people with drier skin. It's not going to dry out your skin, it's going to be really hydrating."

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"My Holy Grail sunscreen currently is the undefined R.R. sunscreen. This is a beautiful sunscreen, it's an SPF 50 with a PA plus plus plus rating, which means it's giving you the highest UVA protection. It's also 40 minutes water resistant, and if you have dry skin this is going to be really really hydrating. It's just beautiful under makeup. It's the one that I wear when I test makeup. It's an all-around perfect sunscreen for me. It is tinted and the tint is right for me."

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"It's really lightweight and fluid with a slight tint that hides the white cast without tinting your skin. It rubs in so quickly and easily, and I've been wearing it under my makeup since I discovered it. It's a really good one and it's a really hydrating sunscreen as well, so if you have skin that's on the drier side, you've got to give this one a try."

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"After 20 minutes it feels dry and set with a nice finish. [...] Makeup goes on really nicely over this sunscreen and wore really well all day without getting shiny or feeling drying. I love that it feels hydrating, doesn't feel drying, [...] and makes my makeup look really youthful, really natural, and skin-like. This is the winner this year and I have been wearing this non-stop since I found it. [...] It works really well with all my different foundations."

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"I found a new sunscreen in my sunscreen testing video this year that I love so much. It is [...] an SPF 50 with a PA plus plus plus rating. It's very lightweight and fluid. It's also tinted and it's very pretty. I've been using that one every day since I finished the EltaMD one up, and it is the Undefined R.R. sunscreen. I've been using that one more than the EltaMD because this is more of a traditional lotion and that's like a really lightweight fluid. The R.R."

Dr Dray

2.69M subs

✓Yay

"Undefined Beauty has a sunscreen that's tinted that I really like I've been raving about for a few years, the RNR Sun Serum. They also recently came out with an organic non-tinted sunscreen that I've been trying out and I really like. It's like nice and amoyan."

All 8 takes from Dr Dray

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"I really love their Sun Serum, it's quite good. I think this is now sold in Ulta too, and [...] it's a really good tinted mineral sunscreen."

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"This one is a favorite of mine, [...] the RNR Sun Serum by Undefined Beauty."

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"I'm rather enjoying this Undefined Beauty RNR Sun serum, [...] so I'm going to wear it here."

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"This is Undefined Beauty's RNR Sun Serum SPF 50, water resistant forty minutes. This has become a favorite of mine, it's a liquid formula, the tint is medium to pale, and it spreads on the skin really nicely. It has a bit of a slippery polymer consistency, but it doesn't have that buttery whipped consistency, it's not greasy, and it would be a great product to apply and then put makeup on over [...] as a makeup base."

NEW SKIN CARE AT TARGET 🛍 DERMATOLOGIST@DrDrayzday

"I highly recommend the Undefined Beauty RNR Sun Serum - it's a mineral tinted sunscreen with niacinamide, which is helpful for redness and hyperpigmentation, and tremella, which is mushroom extract for moisture. This looks great on the skin in my opinion. I love it and I'm currently wearing it, though it is pricey."

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"This one I have been loving. It [...] is a mineral sunscreen that is tinted and blends onto the skin well, giving the skin a nice hydrated glow without being greasy or shiny. It doesn't peel or roll up off of the skin and it's water resistant [...] so you could rely on this if you're going to be outside for a prolonged period of time. It's mineral so there's no issue with it burning or stinging around the eyes."

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"I haven't heard anybody really hyping this up and it is so good. It's [...] a tinted mineral sunscreen that's water resistant and really does blend onto the skin in a sheer fashion without looking casty. It spreads well, it's not greasy, and it gives the skin a nice luminous glow. It's very similar to the Ilia Skin Tint which is $48 for an ounce, but this is much more affordable at $28 for 1.7 ounces."

Skin Obsessed Mary

33k subs

✓Yay

"This is the RNR Sun Serum by Undefined and I just love it. It was a recent discovery for me this year and my sunscreen challenge. It just evens out my skin tone, gives me adequate coverage, just makes me look a little bit better. I do carry a lot of redness in the middle of my face so this just makes things a little bit better. It's also quite moisturizing and it gives a little bit of a glow."

All 3 takes from Skin Obsessed Mary

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"It's very lightweight, it absorbs very quickly, it is easy to layer, and it's non-drying. It is gorgeous under makeup. This was one of those I can see this becoming a Holy Grail one that I'm going to reach for over and over again. [...] It's a five out of five. This is fabulous. The only downside is that I have to ship it in from the US. [...] They don't seem to be necessarily selling it here in the EU or on the side of the pond at all, which is a bit of a bummer."

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"But then it started to degrade and it started to separate so you could see the color sitting separate from the oils and it got disgusting. It also got really hard for me to apply like it got so incredibly runny that it would be running down here before I could get it on my face. [...] Ireland is not freaking hot and [...] this was just sitting in my bathroom in a relatively cool space with not a huge amount of light."