Name: Tri-luronic Hydrating Serum
Brand: Counter
Price: 58.0 USD
Availability: InStock
Rating: 4.7 (161 reviews)

Bestseller

Counterglow Tri-luronic Hydrating Serum in a beige pump bottle, 30 ml

Bottle wrapped in creamy serum. In a consumer study, 97% said skin feels nourished; 91% said more supple and bouncy.

Woman holding the serum bottle to her cheek. Text: The hyaluronic serum designed to do more.

Three vials of serum. Tri-luronic Complex: three forms of hyaluronic acid that deliver, sustain and retain hydration.

Close-up of a cheek with serum applied. Visible results: improves hydration and elasticity, minimizes the look of fine lines.

Ingredient vials. More than moisture: hyaluronic acid, rainbow algae and plum oil, squalane, and fermented sugars.

Close-up of the smooth, creamy serum texture

Serum guide: All Bright Vitamin C to brighten (AM), Tri-luronic to hydrate (AM/PM), Retinatural+ to refine (PM)

Counterglow routine: 1 Cleanse with Silky Skin Cleanser, 2 Prep with Hyaluronic Moisture Mist, 3 Treat with Tri-luronic Serum, 4 Protect with Adaptive Moisture Lotion

The Standard, Counter's Real Clean: we ban 3,000+ questionable ingredients on The Never List and review every ingredient for safety

Size

30 ml / 1 fl. oz.

Purchase

Single

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Benefits

Hydrate
Plump
Bounce
Glow

Description

Most hydration serums rely on a single form of hyaluronic acid. Counterglow Tri-Luronic Hydrating Serum takes a more complete approach. Powered by Tri-Luronic™ Complex, a blend of three complementary forms of hyaluronic acid, the formula helps deliver hydration at multiple levels and support moisture retention for skin that looks visibly plumper, smoother, and more supple. The result—skin that looks so healthy, it glows.

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Ingredients

Key Ingredients

TRI-LURONIC COMPLEX

Three forms of hyaluronic acid—Hydrolyzed Sodium Hyaluronate, Sodium Acetylated Hyaluronate, and Sodium Hyaluronate—selected for their unique molecular weights and complementary hydration benefits. Together, they help deliver immediate hydration, support moisture retention, and promote longer-lasting hydration at multiple levels of the skin.

RAINBOW ALGAE + PLUM OIL

Rich in antioxidants, essential fatty acids, and skin-supporting nutrients, this nourishing duo helps replenish skin and support healthy-looking radiance.

FERMENTED SUGARS

Bioactive fermented sugars help calm and smooth skin while supporting barrier resilience and lasting hydration for a healthier-looking complexion.

SQUALANE

A lightweight skin-compatible lipid that helps replenish moisture, support the skin's moisture barrier, and preserve hydration for softer-, smoother-looking skin.

Full List

Tap a product to view full ingredient list

KEY BENEFITS

Intelligent Hydration System

Tri-Luronic Complex combines three complementary forms of hyaluronic acid — each selected for its molecular weight and function — to deliver hydration at multiple levels of the skin, not just the surface.

Visibly Plumper, More Supple Skin

Clinically demonstrated to improve hydration and minimize the appearance of fine lines for skin that looks smoother, softer, and more supple.*

Improved Elasticity and Bounce

Clinically demonstrated to improve skin elasticity for skin that appears more resilient and bouncy.*

Healthy-Looking Glow

Rainbow algae and fermented sugars help smooth and revitalize skin for radiance that comes from healthy-looking skin—not surface shine.

Barrier Support

Plum oil and squalane help nourish skin, support the moisture barrier, and help preserve hydration for healthier-looking skin.

*Based on a 32-subject clinical study after 4 weeks, used twice daily.

FORMULATION APPROACH

AN INTELLIGENT APPROACH TO HYDRATION

Many brands treat hyaluronic acid as a single ingredient designed simply to add moisture to skin. Counter takes a more intelligent approach.

The Counterglow collection is built around an Intelligent Hydration System, a philosophy that recognizes that not all hyaluronic acid is created equal. Each Counterglow formula features a carefully selected form of hyaluronic acid chosen for its unique structure, function, and role within the product. Combined with skin-nourishing ingredients, Counterglow is designed to do more than hydrate—helping nourish, support, and preserve healthy-looking skin for a balanced, radiant glow.

For Tri-Luronic Hydrating Serum, we combined three complementary forms of hyaluronic acid—each selected for its unique molecular weight, function, and hydration benefit. Together, they help deliver immediate hydration, support moisture retention, and promote longer-lasting hydration at multiple levels of the skin.

This is hyaluronic acid designed to work with skin, not just sit on top.

Clinically tested. Rigorously screened for safety. Counterglow is formulated for skin that isn’t just hydrated—it’s so healthy, it glows.

CLINICAL RESULTS

Clinically demonstrated to:*

Minimize appearance of fine lines
Improve hydration
Improve skin elasticity

Immediate:**

[ 91% ] said skin looks soothed & calmed

8 hours:***

[ 91% ] said skin feels nourished

After four weeks of use:****

[ 97% ] said skin feels nourished
[ 91% ] said skin feels more supple & bouncy
[ 91% ] said skin looks healthier & more radiant

*Based on 32-subject clinical study after 4 weeks, used twice daily
**Based on a 32-subject consumer perception study immediately after use
***Based on a 32-subject consumer perception study after 8 hours of use
****Based on a 32-subject consumer perception study after 4 weeks, used twice daily

TEXTURE

How to Use

Apply 1–2 pumps to face, neck, and décolletage after cleansing and toning while skin is still slightly damp. Use morning and night. Follow with moisturizer.

Designed to be layered seamlessly with Countertime Retinatural®+ Advanced Super Serum and All Bright Vitamin C Serum.

Product in-use videos feature our creator community, including paid partnerships.

Recycling

Pairs well with

Adaptive Moisture Lotion – 50 ml / 1.69 fl. oz.

Adaptive Moisture Lotion Counterglow

4.8

Rated 4.8 out of 5 stars

229 Reviews

$55

View Product

Hyaluronic Moisture Mist – 75 ml / 2.54 fl. oz

Hyaluronic Moisture Mist Counterglow

4.5

Rated 4.5 out of 5 stars

163 Reviews

$48

View Product

Silky Skin Cleanser – 118 ml / 4 fl. oz.

Silky Skin Cleanser Counterglow

4.7

Rated 4.7 out of 5 stars

301 Reviews

$38

View Product

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Frequency:

FORMULATION FACT 01

Formulated without heavily ethoxylated ingredients such as Polysorbate 20 that carry particular risk for carcinogenic contaminants, ethylene oxide and 1,4-dioxane. We take ingredient purity seriously.

FORMULATION FACT 02

We never formulate with per- and polyfluoroalkyl substances (PFAS) - “forever chemicals” that can accumulate in our bodies and that have been linked to cancer, weakened immune systems, reproductive and developmental harm, and hormone disrupting effects.

Displays a model in the process of applying a white Counter Cream to her face.

FORMULATION FACT 03

We use Cystoseira tamariscifolia extract for its antioxidant, skin conditioning, and age-defensive benefits instead of Macrocystis pyrifera (Kelp) extract or Undaria pinnatifida extract, which can sometimes contain higher levels of iodine. Some algae, particularly brown seaweeds, naturally accumulate iodine from seawater as part of their growth process. While iodine is an essential trace element for healthy thyroid function, excessive exposure—especially in sensitive individuals—can disrupt thyroid hormone balance. Indeed, the Environmental Working Group (EWG) Verified program enforces strict limits on iodine levels in products containing brown algae. We carefully review and monitor the iodine content of all algae-derived extracts used in our formulations.

FORMULATION FACT 04

All seaweeds are algae, but not all algae are seaweeds. While seaweeds are valued in serums for their hydrating and antioxidant benefits, some species can pose risks due to the presence of hormone-like compounds, pro-oxidant activity, or heavy metal accumulation. We carefully review all seaweed ingredients for potential contaminants and look to avoid species with concerning evidence of endocrine activity and oxidative stress.

What makes Tri-Luronic Hydrating Serum different from other hyaluronic acid serums?

Many hyaluronic acid serums rely on a single form of hyaluronic acid to attract
moisture to the surface of skin. Counterglow Tri-Luronic Hydrating Serum combines three complementary forms of hyaluronic acid — each selected for its unique molecular weight and function — to deliver hydration and support moisture retention at multiple levels of the skin. This is part of Counter's Intelligent Hydration System, a formulation philosophy built on the principle that not all hyaluronic acid is created equal.

Why does this serum contain three forms of hyaluronic acid?

What is the Intelligent Hydration System?

The Intelligent Hydration System is Counter's formulation philosophy behind the
entire Counterglow collection. Rather than treating hyaluronic acid as a single commodity ingredient, Counter selects a specific form of hyaluronic acid for each product in the regimen — chosen for its unique molecular weight, structure, and role at that particular step. Counterglow Tri-Luronic Hydrating Serum is the fullest expression of that system, combining three forms of hyaluronic acid into a single formula.

Is Counterglow Tri-Luronic Serum good for dry or dehydrated skin?

Yes. Counterglow Tri-Luronic Hydrating Serum was designed for anyone whose skin
needs more than a temporary moisture boost. Powered by three forms of hyaluronic acid, it helps deliver hydration and support moisture retention at multiple levels of the skin — making it especially effective for skin that feels dry, tight, or lacking in bounce and suppleness. It layers seamlessly into any routine and works well paired with the Counterglow Adaptive Moisture Lotion or Counterglow Hyaluronic Cushion Cream for deeper hydration support.

How quickly will I see results?

Many people notice an immediate difference in how their skin feels — softer, more comfortable, and more hydrated — right after the first use. With continued use, Counterglow Tri-Luronic Hydrating Serum is clinically demonstrated to improve hydration, improve skin elasticity, and minimize the appearance of fine lines after four weeks.*

*Based on a 32-subject clinical study after 4 weeks, used twice daily

Does Counterglow Tri-Luronic Serum help with the appearance of fine lines?

Yes. In a clinical study, Tri-Luronic Hydrating Serum was shown to improve hydration,
improve skin elasticity, and minimize the appearance of fine lines.* For more targeted visible renewal and firming, Countertime Retinatural®+ Advanced Super Serum is specifically designed to address fine lines, firmness, and skin renewal.

*Based on 32-subject clinical study after 4 weeks, used twice daily

Should I apply Counterglow Tri-Luronic Serum before or after moisturizer?

Can I use Counterglow Tri-Luronic Hydrating Serum with vitamin C, retinol, other skin care products?

Does Counterglow Tri-Luronic Hydrating Serum contain retinol?

No. Counterglow Tri-Luronic Hydrating Serum is a dedicated hydration serum focused on delivering and supporting moisture retention through Tri-Luronic Complex and complementary skin-nourishing ingredients.

For visible renewal and retinol-like results, the Countertime Retinatural®+ Advanced Super Serum is powered by our Retinatural®+ Advanced Renewal Complex—a blend of clinically studied retinol alternatives designed to deliver visible renewal without the irritation and sensitivity commonly associated with traditional retinoids.

Retinoic acid and retinyl palmitate—derivatives of retinol (vitamin A)—are on The Never
List®. When applied to the skin in the presence of sunlight, these ingredients
may increase the risk of skin cancer and skin sensitization. Read more about these ingredients and The Never List® here.

What is Counter's approach to clean?

We define “clean beauty” as beauty products developed to meet a high standard for both
performance and safety.

Every Counter product is formulated with human health and safety in mind, according to publicly available criteria that guide how we evaluate ingredients, develop formulas, and make decisions about sourcing and packaging. Because transparency matters, we publicly share the standards behind our products. Read more at counter.com/thestandard

Tri-luronic Hydrating Serum

Intelligent Hydration System

Visibly Plumper, More Supple Skin

Improved Elasticity and Bounce

Healthy-Looking Glow

Barrier Support

Clinically demonstrated to:*

Immediate:**

8 hours:***

After four weeks of use:****

FORMULATION FACT 01

FORMULATION FACT 02

FORMULATION FACT 03

FORMULATION FACT 04

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