Stark Skincare

EQUINOX Calm + Smooth Hydration Serum

Name: EQUINOX Calm + Smooth Hydration Serum
Brand: Stark Skincare
Price: 58.0 USD
Availability: InStock
Rating: 4.98 (121 reviews)

Soothing Hyaluronic Acid alternative serum for dewy, plump skin.

$58.00

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Size 30ml 50ml

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One-time purchase

Keep your daily ritual fully stocked! Subscribe and save:

Deliver every 4 months, 10% off
Deliver every 2 months, 15% off

Auto-renews, skip or cancel anytime.

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Plant-Based Formulas
Science-Backed Actives
Tested on CEOs not Animals

Key Functions: Hydrating, Soothing, Repairing, and Plumping.

Best for: All skin types, Aging, Combination, Dry, Mature, Normal, Oily, Problem, Sensitive, Transitional Seasons, Cold / Dry Weather, and Hot / Humid Weather

Some Key Ingredients: Aloe vera, Green tea, Helichrysum, Panthenol, and Centella Asiatica.

30 ml

Product Description

Our hydration serum for all skin types. Soothes, smooths and calms skin while delivering deep hydration.

Delivers deep hydration with a skin-friendly pH of 5
Contains dual Helichrysum extracts for powerful soothing benefits
Provides immediate and sustained moisture with multiple humectants
Versatile enough for use around eyes and lips

Equinox, (formerly known as Everlasting,) is a botanical gel serum formulated to deliver comprehensive hydration while addressing multiple skin concerns. This lightweight, fast-absorbing formula is suitable for all skin types, including sensitive complexions.

Helichrysum-rich formula for skin resilience

The serum features Helichrysum as a central botanical element, incorporating both Helichrysum italicum flower water and Helichrysum stoechas extract to maximize soothing and anti-inflammatory benefits. This dual Helichrysum approach works alongside Alpine-sourced Edelweiss extract, which helps reinforce barrier function while providing protection against environmental factors.

Deep Hydration Strategy

Equinox employs a multi-layered hydration strategy combining botanical waters from chamomile and rose with effective humectants including Sodium PCA, glycerin, and trehalose. This approach ensures immediate moisture delivery and sustained hydration. The addition of panthenol (vitamin B5) and allantoin enhances the formula's soothing capabilities while supporting cellular renewal. Green tea leaf extract and spirulina provide antioxidant benefits and support skin resilience.

The serum's blue gel texture melts effortlessly into the skin, providing an immediate cooling sensation that feels refreshing for irritated skin. Equinox delivers immediately noticeable results, addressing fine lines, reducing redness, and creating a smooth, hydrated canvas for subsequent products or makeup. The versatile formula can be used around the delicate eye and lip areas, simplifying multi-step routines.

Ingredients INCI

Ingredients INCI:

Aloe Barbadensis Leaf Juice, Helichrysum Italicum Flower Water, Anthemis Nobilis (Chamomile) Flower Water, Rosa Damascena (Rose) Flower Water, Sodium PCA, Camellia Sinensis (Green Tea) Leaf Extract, Helichrysum Stoechas Extract, Propanediol, Lactobacillus/Nereocystis Luetkeana Ferment Filtrate, Hydrocotyl (Centella Asiatica) Extract, Glycerin, Leontopodium Apinum (Edelweiss) Extract, Hydrolyzed Oats, Panthenol (B5), Allantoin, Spirulina Platensis Extract, Trehalose, Caesalpinia Spinosa Gum, Sodium Levulinate, Sodium Anisate

Shipping, Customs, Duties & Tariffs

Ships from Ottawa, Canada on Monday and/or Wednesday and/or Friday.
Shipping fees: $10 flat-rate shipping in North America.
Free Shipping: In Canada & USA for orders over $125.
Ships completely tariff-free to the USA (no surprise fees!)
International: No surface shipping. Please choose a tracked method if available. Customs & Duties depend on your country.

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Equinox calm and smooth hydration serum by Stark Skincare — soothing gel serum with edelweiss, sea kelp, and helichrysum

Soothing Hyaluronic Acid alternative serum for dewy, plump skin.

Using this Gel

Experience it

EQUINOX is a distinctive blue gel texture that feels instantly cooling and refreshing as it glides over the skin, delivering an immediate surge of hydration that absorbs within seconds. The natural scent profile is a harmonious blend of fresh grassy notes with delicate floral undertones. Upon absorption, the skin feels noticeably plumper with a dewy finish that looks naturally radiant, creating the perfect canvas for makeup or an ideal hydration layer under facial oils.

How to Use it

Apply EQUINOX to freshly cleansed, slightly damp skin both morning and evening, dispensing one to two pumps onto fingertips and pressing gently into the face, neck, and décolletage. For morning use, layer EQUINOX beneath your moisturizer and sunscreen to create a protective hydration barrier, or mix a pump with your foundation for added dewiness. In your evening routine, EQUINOX serves as the perfect companion to active treatments—apply before retinol products to buffer potential irritation, or use after acid exfoliants to calm and rehydrate skin; for an intensive overnight treatment, apply EQUINOX followed by facial oil to create a moisture-locking sleep mask.

Why You Need it

Our gel serum works at multiple skin levels to actually improve barrier function while providing immediate relief to stressed complexions. The versatile formula serves as both a preventative and corrective treatment—defending against environmental aggressors while simultaneously repairing existing damage—making it essential for any skincare regimen regardless of skin concern.

Boreal Plants for skin strength 🖤 Clinically Proven Actives 🖤 Cruelty- Free 🖤 small batch freshness 🖤 Vegan formulas 🖤 no synthetic fragrance 🖤 No synthetic colours 🖤 in-house formulas 🖤 Boreal Plants for skin strength 🖤 Clinically Proven Actives 🖤 Cruelty- Free 🖤 small batch freshness 🖤 Vegan formulas 🖤 no synthetic fragrance 🖤 No synthetic colours 🖤 in-house formulas 🖤

Key Ingredients in EQUINOX Calm + Smooth Hydration Serum

Edelweiss (Leontopodium Alpinum) Extract

This alpine plant survives extreme UV, wind, and cold by producing powerful protective compounds, and your skin benefits from the same chemistry. Rich in leontopodic acids with antioxidant activity that rivals vitamin C. A quiet powerhouse.

Sodium PCA

Your skin naturally produces sodium PCA as part of its moisture-retention system. Supplementing it topically draws water into the outer layers of skin and holds it there, keeping things plump and comfortable all day.

Panthenol (vitamin B5)

Penetrates into skin and converts to pantothenic acid, which your cells use to produce energy and repair themselves. Attracts and holds moisture, reduces redness, and strengthens the skin barrier. One of those ingredients that quietly makes everything better.

Frequently Asked Questions

What does a hydrating serum do?

A hydrating serum delivers concentrated moisture to the deeper layers of skin using humectants — ingredients that draw water in and hold it there. Unlike a moisturizer, which sits on the surface, a serum absorbs quickly and works at a cellular level. Equinox uses Sodium PCA, glycerin, trehalose, and panthenol (B5) to deliver immediate plumpness and sustained hydration throughout the day.

How do you use a hydrating serum?

Apply to freshly cleansed, slightly damp skin before heavier products like facial oils or moisturizers. Press — don't rub — into face, neck, and décolletage. Equinox works morning and evening. In the morning, follow with a daytime serum and SPF. At night, layer a facial oil, cream or serum on top to seal in the hydration. It can also be applied around the eyes and lips.

How often should you apply a hydrating serum?

Twice daily — morning and evening — is ideal for most skin types. Hydrating serums work best when applied consistently to damp skin so the humectants have water to draw from. Equinox is gentle enough for twice-daily use on even sensitive or reactive skin, and its formula actually improves barrier function with repeated use rather than creating dependency.

What's the difference between a hydrating serum and hyaluronic acid?

Hyaluronic acid is one humectant; a hydrating serum is a complete formula. Equinox skips HA entirely and uses Sodium PCA, glycerin, panthenol, and hydrolyzed oats (and three more humectants!) instead — ingredients that hydrate without the tightness or sensitivity some people experience from hyaluronic acid. It's a particularly good option for those whose skin doesn't respond well to HA-based serums.

What comes first — serum or moisturizer?

Serum always goes before moisturizer. The rule of thumb is thinnest to thickest — water-based serums absorb first, then oils or creams seal everything in. Apply Equinox to damp skin right after cleansing, then layer your facial oil or moisturizer on top. In the morning, sunscreen goes on last.