Index / Allies of Skin / CE15 Brightening & Firming Oil
Allies of Skin

CE15 Brightening & Firming Oil.

Allies of Skin CE15 Brightening & Firming Oil
Serums

About this product

An antioxidant-rich oil formulated with vitamin C derivative to brighten skin, boost radiance, and provide intensive hydration.

Guru Score

86%

Yay

4 experts · Moderate agreement
4Gurus
4Yay
0Mixed
0Nay

What they liked

  • Glowy, plump, soft skin feel
  • Vitamin C derivative with antioxidants
  • Lit from within radiance by morning

What they flagged

  • Pricey

What the gurus are saying

This oil's immediate radiance boost is the standout, reviewers wake up with visibly soft, plump, glowing skin after just one application. The vitamin C derivative (THD) pairs with antioxidants like phycocyanin and CoQ10 to brighten skin and strengthen the skin barrier, with intense hydration that works overnight. Combining it with retinoids amplifies their effects, though the price is steep.
Synthesized from 4 expert reviews · most recent take June 2026

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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Yay
"This is one of the quickest acting vitamin Cs you'll ever find. If you're impatient and want the glow up, want to fade hyperpigmentation, and want to boost collagen, this will do it for you. The old formula worked in as little as two weeks to help get on top of hyperpigmentation. The new formula is if anything a little bit quicker and they've used citrus cells additional to the existing formula to boost everything. It is one of the best vitamin Cs you will ever use. If you have two or three weeks until you need to be glowing for your holiday or for a big event and don't have time to waste, get this. It will deliver that in that short space of time. Genuinely stunning."
All 3 takes from Mad About Skin
HOTTEST NEW ANTI AGING SERUM - This Changes Everything
"This is the Allies of Skin firming oil. This actually has a vitamin C derivative, it has a beautiful dose of antioxidants, you've got some pro-collagen ingredients here too, and it packs a punch when it comes to hydration. This is like a one-stop shop for your morning skincare, perfect for those other serums. Now this one isn't the cheapest product on the market."
5 YEARS YOUNGER INSTANTLY - Fastest Acting Anti Aging Skincare
"This has an immediate impact of boosting radiance and luminosity in the skin and it also hydrates you to the gods to boot. This is a nighttime treatment so use this in your evening skincare routine and then when you wake up the following morning your skin is soft, supple, glowing to the gods and you just have that lit from within radiance. It works after just one application and it all comes down to how amazing the formulation is. We've got a blend of different oils in here which are going to deeply nourish and hydrate as we sleep but it also has some great brightening components to it. It's got Puccoled, some great long-term anti-aging and it also has a blend of different antioxidants. These are going to protect our skin and always help build back the skin barrier as we sleep. This promotes healthier skin but for me the quick win comes from that boost to radiance and luminosity that you wake up with. I always know I'm going to have a good skin day if I use this the night before. I see it as like a treat for the skin, tackles dehydration, lack of radiance and luminosity. It's like a key component of an anti-aging skincare routine."
Greatest SKINCARE BRAND 2026 - 3 Brands That Changed It All
"This is one of the quickest acting vitamin Cs you'll ever find. If you're impatient and want the glow up, want to fade hyperpigmentation, and want to boost collagen, this will do it for you. The old formula worked in as little as two weeks to help get on top of hyperpigmentation. The new formula is if anything a little bit quicker and they've used citrus cells additional to the existing formula to boost everything. It is one of the best vitamin Cs you will ever use. If you have two or three weeks until you need to be glowing for your holiday or for a big event and don't have time to waste, get this. It will deliver that in that short space of time. Genuinely stunning."
Yay
"I've started adding in vitamin C even at night and the one I've been loving is this one here by Allies of Skin, it's the CE15 Brightening & Firming Oil. So not only does it have THD but it also has phycocyanin and CoQ10. On the nights that I'm not using my retinoid I reach for this one here just for the extra anti-aging benefits and the skin brightening benefits. This is a little bit pricey."
Yay
"I really enjoy a good oil serum. My skin has changed quite a bit though; it is a lot less dry and less dehydrated than it used to be, so I'm tending towards fewer layers. But recently my skin has been feeling quite lackluster, so I do appreciate that additional boost without the extra heaviness from Allies of Skin's C.E. 15 Bacchochial Firming Oil. This is such a fast-absorbing and lightweight oil serum that it disappears. It really doesn't feel like an added layer. It's one of the lightest oil serums I've ever tried. This sits in a base of rosehip oil, which is a dry oil but it's also full of vitamin A. There's a beautiful blend of nine cold-pressed oils as well as a vitamin C derivative that's great for brightening the skin and evening out the skin tone, vitamin E, as well as one percent Bacchochiol and CoQ10. So clearly this is really an antioxidant-rich, well-aging oil serum."
Yay
"The C15 oil, always an oil at night, that's my non-negotiable, really that's the best thing I can do. And also if you want your skin, there have been a lot of studies that have been shown that if you have for example melasma, it's good to use vitamin C twice a day. So in the morning I like to use a vitamin C serum, at night I like to use a vitamin C oil."
Sponsored
All 4 takes from Skin Obsessed Mary
⭐️ How to Repair Damaged Skin | Skin Obsessed Mary
"This is the Allies of Skin CE15 Brightening & Firming Oil and I am so obsessed with this now. I am an oil fanatic, anything that's going to really help to hydrate I am here for it. And because the tretinoin can be irritating, pairing it with this helping to soften it. So if you're feeling a little bit dry, this just completely gets rid of that. It has 11 different oils to soothe the skin and it's just perfection. It has 13 different antioxidants, this is just the powerhouse, and dry irritated skin be gone. I've recently learned that by pairing bakuchiol with retinoid, it actually helps the vitamin A be more effective. So not only is it starting to soothe, it's also there to boost the effectiveness of vitamin A, which is brilliant. This is just a match made in heaven in my book."
⭐️ Skin Talk | Founder of Allies of Skin | Exciting New Products ⭐️
"The C15 oil, always an oil at night, that's my non-negotiable, really that's the best thing I can do. And also if you want your skin, there have been a lot of studies that have been shown that if you have for example melasma, it's good to use vitamin C twice a day. So in the morning I like to use a vitamin C serum, at night I like to use a vitamin C oil."
⭐️ Summer SKINCARE Faves & Fails | Skin Obsessed Mary
"This is called the CE15 Brightening and Firming Oil and it is chalk full of so many good things. I love an oil, I gravitate towards them. My mature skin is more dehydrated, it's drier, so I do like to layer oils into my routine if I can figure out where it fits. This has about a bazillion antioxidants in it, it is so good for the skin. It has 10% vitamin C, 5% vitamin E, it has 1% Puschka oil, it has coenzyme Q10, it has so many things in it, it has 11 different oils, all there to really just help that parched skin. The way that I figured out how to use this in my routine is at night as a part of my face routine. I wait a couple of hours after my retinoid and I put this on top of that because I have learned recently that Puschka and retinoids actually work very well together, they're complimentary. The soothing elements of Puschka help with the potentially irritating effects of a retinoid. When I put on my retinoid it's not drying but it certainly isn't plumping, but I put this stuff on top and oh my skin feels phenomenal."
❤️ Perfect Pairs | Products that Work Better Together
"I put this on straight after and my skin is glowy it is plump it is just soft so it has that feel to it that I'm really searching for. I've also recently learned by combining this with the retinoid actually increases the effectiveness of the vitamin A so that's a bonus. These two are just a match made in heaven and I am obsessed."

Frequently asked.

What is Allies of Skin CE15 Brightening & Firming Oil?

An antioxidant-rich oil formulated with vitamin C derivative to brighten skin, boost radiance, and provide intensive hydration.

Is Allies of Skin CE15 Brightening & Firming Oil worth it?

Yes. All 4 gurus who reviewed it give it their stamp of approval, for a Guru Score of 86%.

What is Allies of Skin CE15 Brightening & Firming Oil's Guru Score?

Allies of Skin CE15 Brightening & Firming Oil holds a Guru Score of 86%. That is our read on how warmly the experts talk about it, based on the verdicts of 4 expert reviewers we have collected.

Who is Allies of Skin CE15 Brightening & Firming Oil best for?

Allies of Skin CE15 Brightening & Firming Oil is generally suited to mature skin.

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