HYDROLOGY | Deep Hydration Serum • 0.75% Hyaluronic Acid + 2% Tremella + 2% Green Algae

PLUMP • HYDRATE • REPLENISH

A concentrated, multi-layer hyaluronic acid serum for dehydrated, dry and moisture-depleted skin, formulated with 0.75% multi-weight Hyaluronic Acid, 10% Coconut Water, 6% Aloe Vera + 2% Tremella Snow Mushroom to replenish moisture and restore a smoother, fuller, naturally dewy appearance.

HYDROLOGY goes beyond the typical one-note hyaluronic acid serum. Its water-binding matrix combines two molecular weights of Hyaluronic Acid with mushroom polysaccharides, humectants, B vitamins, marine algae and nutrient-rich botanical extracts to address dehydration from multiple angles—helping skin attract moisture, retain hydration and maintain a healthier-feeling moisture barrier.

The result is softer, plumper, more supple skin with visibly softened dehydration lines and a fresh, luminous finish—without heaviness or oiliness.

 

PRODUCT HIGHLIGHTS

MULTI-WEIGHT HYALURONIC ACID
A 0.75% dual-weight Hyaluronic Acid system combines high- and ultra-low-molecular-weight HA for complementary hydration and visible skin-plumping benefits.

BOTANICAL HYDRATION MATRIX
10% Coconut Water, 6% Aloe Vera and 2% Tremella Snow Mushroom create a deeply hydrating botanical foundation for thirsty, moisture-depleted skin.

BARRIER + PHYTONUTRIENT SUPPORT
Niacinamide, Panthenol, Shiitake Mushroom, Green Algae, Orchid, Kale and fruit botanicals provide complementary barrier-supportive, conditioning and antioxidant benefits.

 

BENEFITS

• Delivers intensive, multi-layer hydration without a heavy or greasy finish
• Visibly plumps skin and softens the appearance of fine dehydration lines
• Helps improve softness, smoothness and suppleness
• Supports healthy skin barrier function and moisture retention
• Helps relieve the tight, depleted feeling associated with dehydrated skin
• Helps restore a fresh, naturally luminous complexion
• Provides antioxidant and phytonutrient-rich botanical support
• Helps improve the appearance of dull, rough and moisture-depleted skin
• Layers easily beneath moisturizer, facial oils and sunscreen
• Provides lightweight daily hydration for both morning and evening routines

 

GOOD FOR

DEHYDRATED • DRY • DULL • MATURE • TIGHT • CREPEY • MOISTURE-DEPLETED SKIN

Especially beneficial for skin showing fine dehydration lines, rough texture, loss of plumpness, tightness or diminished glow.

HYDROLOGY is also well suited to combination or oilier skin that is dehydrated but does not necessarily need a heavy moisturizer.

 

KEY ACTIVES

HYALURONIC ACID — 0.75%

A dual-molecular-weight hydration system combining 0.5% High Molecular Weight + 0.25% Ultra-Low Molecular Weight Hyaluronic Acid. Hyaluronic Acid helps bind water within the skin’s surface layers, improving visible plumpness, softness and suppleness while softening the appearance of fine dehydration lines.

COCONUT WATER — 10%

A naturally nutrient-rich, lightweight hydration base that helps replenish moisture while contributing naturally occurring minerals and skin-conditioning compounds.

ALOE VERA — 6%

A soothing botanical humectant that provides water-based hydration while helping condition dry, depleted or environmentally stressed skin.

TREMELLA | SNOW MUSHROOM — 2%

A polysaccharide-rich mushroom prized for its exceptional water-binding and skin-conditioning properties. Tremella complements Hyaluronic Acid to help maintain moisture, softness and a visibly plumper complexion.

NIACINAMIDE | VITAMIN B3 — 2%

A multifunctional skin-supportive vitamin that helps reinforce healthy barrier function, improve moisture retention and support smoother, more even-looking skin.

PANTHENOL | PRO-VITAMIN B5 — 2%

A humectant and skin-conditioning vitamin that helps attract moisture, support barrier comfort and leave dry or dehydrated skin feeling softer and more resilient.

LENTINULA EDODES | SHIITAKE MUSHROOM — 2%

A botanical source of naturally occurring polysaccharides and antioxidant compounds that complements HYDROLOGY’s hydrating, conditioning and well-aging botanical complex.

LAMINARIA DIGITATA | GREEN ALGAE — 2%

A marine botanical rich in polysaccharides and naturally occurring minerals that provides hydrating, conditioning and antioxidant support for dry and environmentally stressed skin.

CYMBIDIUM FABERI | ORCHID EXTRACT — 2%

A phytonutrient-rich botanical containing naturally occurring minerals, polysaccharides, phenolic compounds, flavonoids and anthocyanins to complement the serum’s antioxidant and skin-conditioning benefits.

KALE EXTRACT — 2%

A nutrient-rich botanical source of naturally occurring antioxidant compounds and carotenoids that helps support healthy-looking, environmentally stressed skin.

FRUIT BOTANICAL COMPLEX — 2%

A botanical blend of Bilberry, Sugar Cane, Orange, Lemon + Sugar Maple extracts that provides naturally occurring fruit-derived compounds to complement HYDROLOGY’s brightening and skin-renewing profile.

VEGETABLE GLYCERIN — 2%

A proven humectant that helps draw moisture to the skin and works alongside Hyaluronic Acid, Tremella, Aloe and Panthenol to strengthen the formula’s overall water-binding system.

 

HOW TO USE

Apply several drops to clean skin after cleansing and toning. Smooth over the face, neck + décolleté, then follow with moisturizer or facial oil.

For enhanced hydration, apply HYDROLOGY to slightly damp skin, then follow with a cream or facial oil to help seal in moisture.

Use morning and/or evening.

 

THE TÉFRA DIFFERENCE

Hydration is more than adding Hyaluronic Acid to water.

HYDROLOGY was created as a complete hydration system rather than a conventional single-active HA serum.

Two molecular weights of Hyaluronic Acid form the foundation, surrounded by an unusually rich supporting matrix of 10% Coconut Water, 6% Aloe Vera, 2% Tremella, 2% Glycerin, 2% Niacinamide + 2% Panthenol, alongside polysaccharide-rich mushrooms, marine algae and antioxidant botanicals.

Together, these ingredients help attract water, condition the skin and support its ability to maintain hydration, while Shiitake Mushroom, Orchid, Green Algae, Kale and fruit botanicals provide another layer of phytonutrient and antioxidant support.

The philosophy is simple: don’t ask one celebrated ingredient to do all the work.

HYDROLOGY combines modern humectants with biologically rich botanicals to leave skin plumper, smoother, replenished + visibly alive with moisture.