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Pai Skincare C-2 Believe Vitamin C Brightening Moisturiser
Pai Skincare UK
Pai Skincare UK
Pai Skincare C-2 Believe Vitamin C Brightening Moisturiser
Pai Skincare UK
Woman with glowing skin gently cupping her face, showcasing brightening skincare benefits on sage green background
Woman applying white cream moisturizer to her cheek, showing the smooth, lightweight texture of C-2 Believe Brightening Moisturizer
Pai Skincare C-2 Believe Vitamin C Brightening Moisturiser
Pai Skincare UK
Pai Skincare UK
Pai Skincare C-2 Believe Vitamin C Brightening Moisturiser
Pai Skincare UK
Woman with glowing skin gently cupping her face, showcasing brightening skincare benefits on sage green background
Woman applying white cream moisturizer to her cheek, showing the smooth, lightweight texture of C-2 Believe Brightening Moisturizer

C-2 Believe™ Brightening Moisturizer

$89.00

50ml / 1.7 fl.oz

At last, a Vitamin C moisturizer that brightens, defends and fortifies your barrier without a trace of irritation.

Pai Skincare UK

Protecting

Pai Skincare UK

Brightening

Pai Skincare UK

Hydrating

Pai Skincare UK

Evens skin tone

Free delivery when you spend $49 (Mainland USA) | 90-Day returns

C-2 Believe™ Brightening Moisturizer

$89.00

•

Vegan

•

Powered By Green Chemistry

•

Cruelty Free
Why You'll Love It

RADIANCE WITHOUT THE DRAMA.

A stabilized Vitamin C moisturizer built for real radiance—no sting required. The silky cream pulls brightening and hydration into one intelligent formula, proven to lift radiance* even on skin that usually flinches at actives. Our oil-soluble stabilized Vitamin C teams up with upcycled Bilberry extract to handle repair and protection, all folded into nourishing plant butters that melt right in. High-performance actives that actually treat your skin with respect. Wild concept, we know.

Quick chemistry break: Traditional Vitamin C (Ascorbic Acid) is powerful but moody. It demands a low pH to function—which irritates skin—and oxidizes before you can blink, turning your jar a charming shade of orange. Less than ideal.

We chose Ascorbyl Tetraisopalmitate instead: a natural, oil-soluble form that releases gradually and stays steady from your first pump to your last. Combined with omega-rich Bilberry extract (rescued from the juice industry), it soothes inflammation while reinforcing your skin barrier.

Then there's Hyaluronic Acid for bounce, prebiotic Inulin to balance your skin's microbiome, and zero-waste botanical oils for that lightweight, never-greasy finish. Sustainability meets skin science, and this is the result. Certified organic, dermatologist-approved, irritation-free brightening for everyone.

Directions

Smooth 1-2 pumps over clean, dry skin on face and neck. If you've just used a face mist, let it absorb first.

In the morning, it's your antioxidant defense against pollution, UV-generated free radicals, and whatever else the day throws your way. In the evening, it works with your skin's overnight repair cycle for next-day radiance. Equally at home morning or night.

For the full brightening routine, layer after Fade Forward Dark Spot Serum. Want to push the Vitamin C further? Pair with our Stabilized Vitamin C 20% Brightening Booster.

Full Ingredients

Aqua (water), Coconut Alkanes, Pentylene Glycol, Camellia Oleifera Seed Oil*, Theobroma Cacao Seed Butter*, Cetearyl Alcohol, Mangifera Indica Seed Butter*, Heptyl Undecylenate, Prunus Domestica Seed Oil*, Myristyl Myristate, Prunus Armeniaca Kernel Oil*, Glycerin**, Ascorbyl Tetraisopalmitate, Cetearyl Glucoside, Inulin, Helianthus Annuus Seed Oil* (sunflower oil), Microcrystalline Cellulose, Vaccinium Myrtillus Seed Oil (bilberry), Cellulose, Sodium Stearoyl Glutamate, Xanthan Gum, Lactic Acid, Fructose, Magnolia Officinalis Bark Extract, Sodium Hyaluronate, Sodium Phytate, Tocopherol* (vitamin e), Glyceryl Caprylate, Backhousia Citriodora Leaf Extract* (lemon myrtle).

Naturally occurring in essential oils: Citral.

50.5% Organic (of total, minus water and minerals) / 100% natural origin.

*Organic **Made using organic ingredients

Recycling

Say no to landfill! Let's recycle everything! - Sarah

Once the product has been fully dispensed, unscrew the pump from the bottle to separate the pump, cap and pouch from the glass. Place the glass bottle in your curbside recycling.

All Pai boxes, cartons, sleeves and inserts can be recycled with your curbside paper recycling.

Some product components are not currently curbside recyclable in most US programs. We are working on a US-specific recycling solution. In the meantime, check what your local recycling provider accepts at earth911.com.

Pai Skincare UK

Key Ingredients

  • Vitamin C

    If you have a dull, uneven skin tone, this powerhouse is for you. Antioxidant Vitamin C - AKA Ascorbic Acid - is well known for its skin-brightening benefits. We source ours from corn, which is then stabilised in a high percentage that slowly releases on the skin for maximum results.

  • Hyaluronic Acid

    A sugar the body naturally produces, Hyaluronic Acid can hold between 10 and 50 times its weight in water, storing it like a reservoir for the skin – giving a long-lasting, moisturising effect. Our all-natural form comes from maize.

  • Upcycled Bilberry Extract

    Soothing wild Bilberry is rich in fatty acids which help to form ceramides, one of the building blocks of the skin barrier. CO2-extracted, it’s upcycled from seeds from agricultural, food and juice industries – because we’d never let the best of nature go to waste.

  • Zero-waste Botanicals

    Organic Camellia Oil and Mango Seed Butter keep skin oh-so-soft. These raw materials are grown for their oils; any waste is carefully managed and used for animal feed or as a natural fertiliser – meaning no landfill.

Sarah Brown, Pai Founder

"Sensitivity can make shopping for skincare feel like an eternal compromise, and actives a scary prospect. Not anymore. We’ve taken Vitamin C – unrivalled for helping to even out skin tone and combat the effects of pollution – and paired it with sustainably-sourced superfood ingredients that work with your skin, not against it. What a bright idea."

SARAH BROWN
FOUNDER, PAI SKINCARE

Frequently Asked Questions

What results can I expect from C-2 Believe?

In an independent consumer trial of 114 women over two weeks, 91.23% said their skin looked more radiant, 94.74% said it felt hydrated, and 89.47% reported a visible brightening effect. 78% also noticed their skin looked more plump. These are real-use results on real skin, not lab conditions.

What skin type is C-2 Believe designed for?

It's built for anyone who wants Vitamin C's benefits but has found conventional formulas too harsh, including reactive, sensitised and rosacea-prone skin. It's also a great fit if your concerns are dullness, uneven tone or early signs of ageing and you'd rather your moisturiser strengthened your barrier than stripped it. The formula is 96-hour patch tested for tolerance on reactive skin.

Is C-2 Believe best used in the morning or evening?

Both work, but mornings are where it really earns its keep. Vitamin C is one of the most effective topical antioxidants for neutralising free radicals from UV and pollution, and ATIP has been shown to protect keratinocytes against UVA-induced damage. Layer it under your SPF to boost your skin's photoprotective defence throughout the day. In the evening, it supports overnight repair and collagen synthesis.

How does C-2 Believe fit into a wider skincare routine?

C-2 Believe works as a standalone moisturiser or as part of a layered routine. For the full Pai brightening routine, go: Light Work Cleansing Oil, Virtuous Circle Exfoliator (weekly), Fade Forward Dark Spot Serum, then C-2 Believe. Apply 1-2 pumps to clean, dry skin on face and neck.

Can I use C-2 Believe alongside retinol or other active ingredients?

C-2 Believe uses a non-acidic, oil-soluble form of Vitamin C, so it doesn't carry the same irritation risks as pairing L-ascorbic acid with other actives. It layers well with most skincare ingredients. If you're using retinol, a common approach is Vitamin C in the morning for antioxidant protection and retinol in the evening, though always introduce new actives gradually and monitor how your skin responds.

Will C-2 Believe help with hyperpigmentation and dark spots?

It tackles pigmentation through two complementary mechanisms. The corn-derived Vitamin C (ATIP) inhibits tyrosinase, the enzyme that drives melanin production, to slow new pigmentation forming. Meanwhile, research by Ando et al. showed that the linoleic and alpha-linolenic acids in Bilberry Seed Oil lighten UV-induced hyperpigmentation by both suppressing melanin synthesis and accelerating the shedding of already-pigmented cells. For stubborn dark spots, pair it with Fade Forward Dark Spot Serum for a more targeted approach.

Is C-2 Believe non-comedogenic and suitable for oily or acne-prone skin?

Yes, it's non-comedogenic, so it won't clog pores. The Bilberry Seed Oil is rich in linoleic acid, which is particularly relevant for acne-prone skin since low linoleic acid levels are associated with disordered sebum production and breakouts. The formula absorbs quickly with a silky, lightweight finish rather than sitting heavy on the skin.

Is C-2 Believe safe to use during pregnancy and breastfeeding?

Yes, it's confirmed pregnancy and breastfeeding safe. The formula is 100% natural origin and free from retinoids, parabens, sulfates, silicones and alcohol. The Vitamin C form used (ATIP) doesn't require the low-pH formulation that can be a concern for sensitive or pregnancy skin.

Does C-2 Believe contain any synthetic fragrance, alcohol or common irritants?

No. The formula is 100% natural origin and free from alcohol, parabens, silicones, sulfates, mineral oil, PEGs, phthalates, SLS, dyes, formaldehyde and synthetic fragrance. It's dermatologist tested and approved, and independently 96-hour patch tested for tolerance on reactive skin.

Why do you use Ascorbyl Tetraisopalmitate instead of regular Vitamin C?

L-ascorbic acid is water-soluble and needs a low, acidic pH (around 2.5-3.5) to penetrate your skin's lipid barrier, which is what causes the stinging and redness. ATIP is oil-soluble, so it passes through that same barrier naturally, without any pH manipulation. The payoff is significant: cells absorb around 10 times the concentration of ATIP compared to standard Vitamin C, it stays in skin cells 40 to 80 times longer because it isn't flushed out through aquaporins, and it doesn't oxidise on contact with air or light, so it remains active far longer in the formula and on your skin.

What are the key ingredients in C-2 Believe?

Alongside the stabilised Vitamin C, Upcycled Bilberry Seed Oil delivers omega-3 and omega-6 fatty acids in a near-optimal 1:1 ratio, providing the linoleic acid your skin needs to form the omega-hydroxy-ceramides (CER[EOH], CER[EOS], CER[EOP]) that hold your barrier together. Prebiotic Inulin from chicory root selectively feeds beneficial bacteria like Staphylococcus epidermidis while not supporting pathogens, and Sodium Hyaluronate binds water to the skin for immediate, sustained hydration.

Is C-2 Believe certified organic and what are its sustainability credentials?

C-2 Believe is certified COSMOS Organic (50.5% organic content), vegan, and Leaping Bunny cruelty-free. The formula uses a circular ingredient approach: Bilberry, Plum and Apricot oils are upcycled from food and juice industry byproducts that would otherwise go to waste, while the Camellia Oil and Mango Seed Butter are zero-waste-to-landfill botanicals.

What makes C-2 Believe different from other Vitamin C moisturisers?

Most Vitamin C products rely on L-ascorbic acid at a low, acidic pH to penetrate skin, which is exactly what causes irritation. C-2 Believe uses Ascorbyl Tetraisopalmitate, an oil-soluble Vitamin C that integrates into the skin's own lipid structure, delivering up to four times the antioxidant effect without any barrier disruption. It's also certified COSMOS Organic and actively builds your skin barrier with ceramide-supporting oils and prebiotic microbiome support, where most brightening products compromise it.

Overall rating: 4.7044535 / 5 from 247 reviews.

AI Generated Review Summary

The C-2 Believe Moisturizer is praised for its hydrating consistency and creamy texture, which leave the skin feeling soft and hydrated. Customers appreciate its gentle nature on sensitive skin and the healthy, dewy glow it imparts. The product's lovely smell and significant improvement in skin luminosity are also highlighted.

Summary topics

  • Hydrating Consistency (3%): It was highlighted by customers that the C-2 Believe cream has a perfect and hydrating consistency.
  • Creamy Texture (11%): Customers appreciated the creamy texture, which is easy to apply and leaves their skin hydrated and plump.
  • Skin Hydration (38%): Many customers brought up that the product leaves their skin feeling soft and hydrated all day long.
  • Natural Glow (8%): Customers expressed appreciation for the natural glow this moisturizer gives to their skin. (100% agreement)
  • Lovely Smell (19%): A significant number of customers raved about the lovely and amazing smell of the product.

Review topics: ["fragrance","improvement","absorbs","works","smell","results","skin","difference","benefits","feels","texture","moisturiser","looks","ingredients","glow","cream","consistency","light","hydration","buy","face","softness","pai","c-2","sensitivity","effect","crème","lotion","addition","anthemis"].

Review highlights

  • "It smells lovely, the cream feels very soft on my skin and it has a light consistency!" — Ketsia M.
  • "It has a lovely light and silky texture, and a refreshing natural citrus scent." — Nicola J.
  • "I love using the vitamin c moisturiser it has a lovely uplifting smell and really does add a glow to my skin" — Lisa B.

Reviews

Favourite moisturiser

"I use this moisturiser nearly every morning, it’s my favourite. I love the consistency. It’s light but very effective on my skin as it matures. It is glowy and doesn’t clog my skin. I use the Pai serum and drops too. Sometimes I just use it on its own after spraying and eye care if I feel my skin needs less products"

— Rose B. (5/5)

My favourite moisturiser

"My favourite moisturiser that does the job without being too greasy and absorbs gently into the skin and I love the smell as well"

— Georgina J. (5/5)

Good moisturizer

"My first time trying this moisturizer for my dry, sensitive skin with rosacea. It hydrates and brightens without irritation and I use it in the morning before makeup. Love the consistency. Would purchase again."

— Sharon M. (5/5)

Excellent results

"I can genuinely say this is a fantastic moisturiser. It smells great and the results speak for themselves. I will never swap brands now."

— Emma G. (5/5)

Bought as a mothers day

"Bought as a mothers day gift. My mum loves it. Not a heavy or greasy cream. She has very sensitive skin and rosacea and this is perfect for her x"

— Melanie V. (5/5)

love it

"I've been using this moisturiser for the last 6 months. I love the smell and texture of it. It spreads easily on the skin and it does not leave a film on the skin, which I love. The light texture and smell make me want to put it on more than anything. I also feel like my skin feels more even and my little blemishes not so prevalent."

— Suzanne I. (5/5)

Balanced and bright

"Light texture. Bright skin effect. Natural ingredients without the nasty chemicals of most cosmetics. This is my go to moisturizer along with Vitamin C drops for extra brightness!"

— Elsa V. (5/5)

The Perfect Start to my Day

"I got a sample of this moisturizer at my facialist’s office and fell in love ever since. Since then, I have repurchased this product four times. It truly brightens my face, moisturizes my skin, and is the perfect primer to my daily sun screen. People have told me my skin is glowing, and it’s always after using this product. Obsessed forever and worth the money! I’d say one bottle usually lasts me about 6 months, a little less in the winters."

— Neha A. (5/5)

The best moisturiser ever

"This is the best moisturiser I’ve ever used. My skin looks nourished and flawless. I’ve been using it for a couple of weeks already and can’t be more than happy. I am definitely going to repurchase it 🌸"

— Olena K. (5/5)

C-2 You Better Believe

"I’ve been using Pai since the launch. I was 53 in August and felt like I needed a glow-up. I switched to C-2 Believe and added the Retinoid booster. So many people have commented on how great my skin looks. I’m so happy with the result."

— Kevin R. (5/5)

Q&A

Hi I started using this moisturiser around 8 months ago and I still got half a bottle left. Can I still use it? Thanks.
Hi Natalie, You can still use this product as long as it is still within its expiry date. You can find this information on the bottom of the bottle. If it has passed its expiry date, we don't recommend using it. Pai Customer Experience Team
Hi, I currently use salvation Jane over an hyaluronic acid serum and under your SPF but want a lighter moisturiser for summer. Would this be compatible with hyaluronic acid products and British summer time?
Hi Christina, Yes, you can still use a Hyaluronic Acid Serum before applying C-2 Believe. Our British Summer Time is also compatible with any products. Pai Customer Experience Team
What is the percentage of vitamin c?
Hi Ali, We use 1% oil soluble Vitamin C. It's easily absorbed into the skin without causing irritation. Pai Customer Experience Team
Will this product aggravate acne? Is it suitable for acne prone skin?
Hi Jen, You can certainly use this moisturiser to help brighten dull skin tones. We would however recommend [The Pioneer](https://www.paiskincare.live/products/geranium-thistle-rebalancing-day-cream) which is designed for acne and blemish-prone skin. Pai Customer Experience Team
Hi Can I use this product around my eye area to combat puffy/dark circles in the area? I'm currently using this on my face. Thank you!
Hi Michaelann, I would not recommend using a moisturiser so close to your eyes. The skin around our eyes is a lot thinner and more delicate and so eye creams are designed to gently target that area. I would recommend our [System D Eye Cream](https://www.paiskincare.live/products/system-d-schisandra-ceramide-cooling-eye-serum) which you can add 1 drop of our [Vitamin C Booster](https://www.paiskincare.live/products/vitamin-c-booster) to. Our System D Eye Cream has cooling and soothing properties which will target any puffiness and the Vitamin C will help to brighten dark circles. Pai Customer Experience Team
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