Haircare designed for extensions
A modern revival of Greek ritual- crafted for the integrity fine, thick or color treated hair.
Meet our founder, Patty Markos
For over two decades Patty Markos has turned haircare into an art of transformation- creating spaces where beauty becomes a sacred daily ritual. She built more than a salon—she built a sanctuary. From a kitchen sink to a sought-after retreat for beauty and transformation, she’s spent decades creating spaces where women feel seen, held, and quietly changed.
Now, through Diadem, she invites others into that same sacred experience. What began behind the chair has become a movement—a ritual, a crown, a calling. Inspired by her love for Greece and rooted in reinvention, her story is a reminder: beauty isn’t surface. It’s a soulful connection.
Explore the Rituals...
THE RITUAL COLLECTION
Simple Sacred Transportive
Theia
shampoo
Theia, named after the Greek goddess of divine light, begins your hair ritual with a gentle yet luminous cleanse. This sulfate- free formula is crafted to lift impurities without stripping moisture, creating a clean, balanced foundation of softness and shine.
We begin layering fragrance in this step with a subtle blend of jasmine and citrus. Theia with awaken the senses while respecting the integrity of both natural hair and extensions. It's the first step in honoring our hair- not as a routine, but as a ritual.
Thalassa
conditioner
Thalassa, named after the primordial goddess of the sea, restores hydration and harmony after cleansing. This silky, weightless conditioner is designed to replenish moisture, smooth frizz, and detangle without weighing down- especially essential for hair extensions.
With notes of warm almond blossom and vanilla, Thalassa envelops the hair in a soft veil of nourishment. It's the calming tide that follows Theia's light, sealing in softness with every rinse.
Ilios
finishing mist
Ilios, named after the Greek sun god, is your final, radiant shield. This weightless anti-frizz mist delivers heat and UV protection while adding a veil of luminous scent- a musky, sunlit finish that lingers without overpowering.
Designed to smooth and protect hair from daily stressors, Ilios doubles as a light hair perfume and sylising mist. Ideal for all hair types and amazing for extensions, it seals in moisture and making hair smooth, protected and shiny- the perfect prelude to your final touch.
The Ritual Brush
Complete your ritual with the signature DIADEM Brush. Designed to smooth, detangle gently, and distribute natural oils across your hair and extensions, it protects extensions while adding a polish to every style. Use daily for softness, strength and quiet elegance.
Our Signature Blend
powered by D.R. 01
Modern Hair Redefined
Every Diadem formula is anchored by D.R. 01 Signature Blend™—a curated balance of clean moisture, plant-derived strength, and weightless softness. Where ancient Greek beauty wisdom meets modern innovation. Crafted for extensions and loved by all hair in need of nourishment and renewal.
Every formula invites you into a ritual that is simple, restorative, and sacred—made for women who cherish time, travel, and transformation.
Cruelty Free
At Diadem, we believe beauty should never come at the cost of compassion.
That’s why none of our products or ingredients are tested on animals — ever.
We work exclusively with manufacturers who confirm that their raw materials and finished formulas are developed without animal testing, in alignment with our values of care and integrity.
Tested on queens, never on animals.
Rave Reviews
Samantha feels transported
Samantha can't get enough of Diadem Ritual's Ilios, praising the smoothing effects and "transportive scent brings a sense of indulgence" to her daily haircare and now feels more like a ritual than a routine.
Maria's hair is silky and shiny
Maria is thrilled with D.R Ilios, noting the clean and high-performance formula that has transformed the health and appearance of her hair, adding so much "silkiness and shine."
Maya feels ready for anything when she travels with D.R.
Maya is in love with Diadem Ritual's travel-friendly Ritual brush and Ilios spray, marveling at how effortlessly they elevate the look and feel of her hair. "The brush is the best I have found! It glides through my extensions so gently and easily. The Ilios spray is the perfect finishing touch for travel-it's lightweight and long-lasting. I love the Ritual duo for my hair!