Coellyo — PH ADJUSTING FOUNDATION
The revolutionary foundation that reads your skin's pH to create your one-of-a-kind perfect shade in 60 seconds. No more cakey buildup, settling into lines, or wrong shades.
- Adapts to Your pH
- Zero Oxidation
- Won't Settle Into Lines
- Dry-Skin & Menopause Friendly
- Every Undertone, Every Season
- Clean & Dermatologist-Tested
Absolutely not. Unlike traditional makeup, our formula uses built-in anti-oxidation technology. Clinical testing showed virtually zero color shift over 14 hours, so you get a true-to-you match that never turns orange from morning to night.
Not at all. Foundation settles into creases when it lacks moisture. Ours is packed with active hydrators like Hyaluronic Acid to nourish your skin, allowing it to glide smoothly over fine lines instead of sinking in and aging you.
You can expect 12 to 14 hours of continuous, flawless wear. Dermatologist stability testing confirms the finish remains virtually unchanged without shifting, melting, or separating all day.
Yes! It uses advanced pH-adaptive microcapsules. Within 60 seconds, these capsules read your skin's unique pH level and body temperature to automatically adjust and mimic your exact undertones — whether you're cool, warm, neutral, or olive.
No, one bottle is all you need. Because the microcapsules continuously read your skin's real-time chemistry, the foundation automatically adapts to your current tone. Whether you get a summer tan or experience hormonal shifts, it adjusts with you.
Absolutely. The formula is dermatologist-tested, non-comedogenic (won't clog pores), and free of synthetic fragrances. It easily covers redness and is highly recommended for sensitive skin, providing a flawless finish without causing irritation.
You are fully protected by our 60-day hassle-free money-back guarantee. Try it out in your own mirror and natural daylight. If it isn't the perfect shade or the best foundation you've ever used, just let us know for a full refund.
All orders are processed within 1–2 business days. Delivery speed depends on your location:
- United States: 4–7 business days
- United Kingdom: 5–9 business days
- International orders: 5–9 business days
Aqua, Mineral Oil, Propylene Glycol, CI 77891, Cetyl PEG/PPG-10/1 Dimethicone, Magnesium Sulfate, Magnesium Stearate, Trimethylsiloxysilicate, 1,2-Hexanediol, CI 77492.
I was SO sceptical after being burned by those dodgy TikTok foundations. But honestly? This actually works. It goes on white and then just... becomes YOUR skin?? I wore it to my daughter's wedding last month and my sister asked if I'd had my makeup professionally done. Nope just TrueTone and 5 minutes! Finally something that doesn't turn me into an Oompa Loompa by lunchtime 🤩🧡
Can we just talk about how I've spent YEARS looking like a completely different colour in photos vs real life?? Every foundation oxidized on me within hours. My friend sent me this and I thought oh here we go another gimmick... but NO. It actually matched my ghost skin?! I keep checking in mirrors expecting to see that orange tidemark and there's just... nothing. Just my face but better. Actual witchcraft I think 🧙♀️✨
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Right so I'm 54 and going through menopause and my skin is a COMPLETELY different person every single day 😭 One day dry, next day oily, sometimes both at the same time?? Every foundation I owned either caked into my lines or slid off by noon. My friend told me about this pH thing and I thought yeah right. But it genuinely adapts to whatever my skin is doing THAT day. No settling into wrinkles. No flaking around my nose. I actually look YOUNGER with this on, not older. Already ordered my second bottle 💜
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Your Perfect Match in 3 Simple Steps
Apply
One pump. That's it. The formula comes out as a neutral cream same for everyone. No shade charts. No guessing.
WATCH IT ADAPT
As you blend, pH-responsive microcapsules read YOUR unique skin chemistry and shift to match your exact undertone. Not "close enough." YOUR shade. 60 seconds.
LIVE YOUR DAY
Office lights, restaurant candles, daylight selfies you look flawless in all of them. No orange by noon. No cakey lines by 3pm. Just you, but better. 12+ hours.refa
SOUNDS FAMILIAR?
FOUNDATION GRAVEYARD IN YOUR DRAWER
Sephora. Ulta. Department stores. Drugstores. You've tried them all. Drawer full of barely touched bottles and not a single one that actually looked like your skin.
NOT LIKE IN THE STORE
Two hours later, you catch yourself in the bathroom mirror. Orange. Again. That sinking feeling when you realize the shade you trusted just… betrayed you.
SETTLES INTO FINE LINES
You blend, you set, you prime. And by 10 AM it's sitting in every crease, every pore, every fine line you didn't even know you had. You look older walking out than walking in.
Why 93% of Women Never Go Back to Regular Foundation
Colour Chemistry
pH-responsive formula reads your unique skin chemistry.
Clean Formula
Dermatologist-tested. Safe for sensitive and rosacea-prone skin.
Natural Finish
Your skin but better. Never thick, heavy, or artificial.
Perfect Match
No more guessing shades. Adapts to your natural undertones.
All-Day Wear
Stays beautiful for 12+ hours without oxidation, patchiness, or transfer.
Deep Hydration
Hyaluronic acid keeps dry and mature skin comfortable all day.
Meet Our Dermatology Experts
Dr. Michael Smith
The pH-responsive formulation is genuinely innovative. I’ve recommended it to patients with rosacea and sensitive skin who previously couldn’t tolerate foundation.
Board Certified Dermatologist
Dr. Anita Sharma
The anti-oxidation technology here is far superior to standard foundations. The colors look stunning & stay on all day.
Board Resident Dermatologist
Dr. Emily Carter
I’ve used this on over 200 brides now. The self-adjusting formula means I can work faster without worrying about lighting changes between ceremony and photos.
Board Certified DermatologistWHY WOMEN OVER 50 ARE SWITCHING TO COELLYO
You've spent years trying foundations that oxidize, cake, and settle into every line. Here's why TrueTone is the last one you'll ever buy.
Traditional Foundation
Matches YOUR Skin, Not a Swatch
Made for Dry, Menopausal Skin
Reads Your Undertone Automatically
Clean Ingredients
No Oxidation
Long-Wearing
60 Day Money Back Guarantee
Frequently Asked Questions
We get it. Those viral color changing foundations use cheap heat reactive pigments that turn the same generic beige on everyone. That's why so many women ended up looking orange and feeling scammed.
TrueTone is completely different. It uses pH adaptive microcapsule technology that reads YOUR specific skin chemistry, not just your body heat. It responds to your unique pH level AND temperature to create a shade that's truly yours. We also built in anti oxidation technology so it won't shift color after application. This is clinically tested, dermatologist approved, and backed by a 90 day guarantee. If it doesn't work, you don't pay.
This is actually exactly who TrueTone was designed for. The pH adaptive formula reads your specific undertone — whether you're cool, warm, neutral, or olive — and adjusts to match it precisely.
We've had hundreds of women tell us they spent years thinking they were impossible to match. Women who describe themselves as "ghost pale" finally found something that doesn't pull pink or orange. And if you're not convinced, our 90 day guarantee means you can try it completely risk free.
This is the number one complaint we hear from women over 50 — and exactly why we formulated TrueTone the way we did. The formula contains hyaluronic acid and squalane that actively hydrate your skin instead of sitting on top of it.
It won't settle into fine lines, cling to dry patches, or emphasize texture. Women going through menopause with fluctuating skin dryness and oiliness in the same day tell us this is the first foundation that actually works with their skin instead of against it.
We know that feeling. The average woman over 50 has spent hundreds — sometimes thousands — on foundations that looked perfect in the store and completely wrong at home.
That's why we offer a 90 Day Perfect Shade Guarantee. Wear it to work. Wear it in daylight. Wear it on a night out. If at any point you decide it's not your match, contact us for a full refund. No questions, no hoops, no restocking fee. We take all the risk so you don't have to waste another dollar.
TrueTone is medium coverage that builds naturally. One layer evens out redness, age spots, and hyperpigmentation without looking like you're wearing a mask.
Need more in certain areas? Layer it. The formula builds without caking, which is almost unheard of in foundations for mature skin. Most of our customers tell us they stopped using concealer entirely.
TrueTone is dermatologist tested and formulated without parabens, sulfates, phthalates, or synthetic fragrances. It's non comedogenic, so it won't clog pores or trigger breakouts.
Women with rosacea, eczema, and post menopausal sensitivity use it daily without irritation. If your skin reacts to everything, this was made with you in mind.
One bottle gives you approximately 60 days of daily use. A little goes a long way because one pump covers your full face. Most customers use one to two pumps per application. With the Buy 1 Get 1 Free offer, you're covered for about 4 months.
No. This is the entire point of TrueTone. Because it reads your skin's pH in real time, it automatically adjusts as your skin tone shifts with the seasons, after sun exposure, or even through hormonal changes during menopause.
One bottle. Every season. No more buying a "winter shade" and a "summer shade."
No. TrueTone was designed to work on its own. No primer, no setting spray, no powder. Apply it directly to moisturized skin and go.
That said, if you love your current routine and want to add a primer or setting powder, it plays nicely with everything. But you don't need to.
Orders are processed within 1 to 2 business days. US delivery takes 5 to 8 business days. UK delivery takes 7 to 12 business days. You'll receive a tracking number by email as soon as your order ships.
Then you get your money back. Simple.
Our 90 Day Perfect Shade Guarantee means you have a full three months to test it in every lighting, every weather, every situation. If you're not completely satisfied, email us and we'll refund you. No return shipping, no restocking fee, no guilt trip. We built this product for women who are done being disappointed, and we stand behind it completely.
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