Deeply Hydrates
Plumps
Evens Skin Tone
Strengthens Barrier
Brightens
Lightweight
#1 Hydrating & Brightening Serum
Glass Skin Serum | SundaSkin | 12 Active Ingredients | 2X Award-Winning
A clinically-proven lightweight hydrating serum designed to deliver immediate plumpness, long-lasting moisture, and a smooth glass skin finish without heaviness or stickiness. This glass skin serum visibly brightens, evens tone and texture, and plumps fine lines.
Same day shipping
30-Day Happiness Guarantee
Safe for Sensitive Skin
Dermatologist-Tested
Why It Outperforms Other Serums
- Fashionista Editor’s Pick Award 2023
- TZR Beauty Hero Award 2024
Most hydrating serums deliver temporary surface moisture that evaporates quickly or leave skin feeling sticky and layered. SundaSkin™ Essential Hydrating Serum is a lightweight hydrating serum designed to deliver hydration across multiple layers of the skin, combining powerful humectants, ferments, marine extracts, and barrier-supporting actives in a formula that absorbs instantly and layers effortlessly.
This 2X award-winning serum:
• Delivers immediate and long-lasting hydration
• Brightens, evens texture and tone, and visibly plumps fine lines
• Improves the appearance of fine lines and wrinkles
• Supports skin barrier function and reduces moisture loss
• Enhances elasticity, smoothness, and natural radiance
• Absorbs quickly without pilling under moisturizer or makeup
Unlike basic hyaluronic acid serums, SundaSkin™ hydrates, smooths, brightens, and strengthens — making it ideal for dry, dehydrated, sensitive, and combination skin.
Who It's For (And Who It's Not For)
Ideal For:
• Dry or dehydrated skin
• Tight, dull, or fatigued complexion
• Fine lines caused by moisture loss
• Sensitive or barrier-compromised skin
• Oily or combination skin needing lightweight hydration
This serum is suitable for all skin types and layers seamlessly into any skincare routine.
Avoid If:
• You prefer heavy, oil-based facial oils
• You are experiencing active skin infections or open wounds
How To Use For Best Results
Apply 1/2 a dropperful to clean, slightly damp skin morning and night.
Gently press into the face and neck before applying SapnaSoft moisturizer to seal in hydration. For best layering:
• Use after cleansing and before moisturizer
• Apply after exfoliation to support barrier balance
• Layer under sunscreen in the morning
• Use before makeup for smoother foundation application
Pro Tip: Applying to damp skin enhances humectant performance and boosts hydration absorption levels.
Clinically-Tested & Consumer Tested
In a 2-week independent consumer perception study:
After 1 Use:
• 96% agreed skin felt immediately more hydrated
• 94% agreed skin appeared smoother and more supple
• 100% agreed tightness and dryness felt significantly reduced
After 2 Weeks:
• 98% agreed skin looked plumper and more radiant
• 95% agreed fine lines caused by dehydration appeared softened
• 100% agreed overall skin hydration improved
Results based on a 2-week independent consumer study of 46 female participants. Results may vary.
Clinical Results
SundaSkin Serum is clinically proven to deliver measurable hydration.
In a 4-week independent clinical study of 32 women aged 25-45:
- SundaSkin Serum increased skin hydration by 24% from baseline.
- Instrumental testing confirmed a statistically significant improvement in hydration levels after consistent daily use.
Measurable Hydration. Visible Results.
SundaSkin™ is a clinically-proven, barrier-support hydrating serum formulated to deliver multi-level hydration without heaviness or stickiness. Designed to replenish moisture at the source, this water-based lightweight serum visibly plumps fine lines, smooths uneven texture, and restores skin’s natural radiance.
After 19+ formulation refinements, our best-in-class cosmetic chemists and dermatologists perfected this fast-absorbing, non-pilling serum engineered for:
- Dry skin
- Dehydrated or tight-feeling skin
- Dull or fatigued complexion
- Fine lines caused by moisture loss
- Sensitive or barrier-compromised skin
- Combination skin needing lightweight hydration
SundaSkin Serum
A clinically-proven, lightweight hydrating serum that delivers deep moisture while plumping, brightening, & supporting barrier.
- Deep, Multi-Level Hydration
- Visibly Plumps Fine Lines
- Brightens & Evens Tone
- Barrier-Supportive Formula
- Lightweight, Fast-Absorbing
Other Hydrating Serums
Many hydrating serums deliver short-lived surface hydration that evaporates quickly, without reinforcing the barrier or maintaining balanced moisture levels.
- Only Surface-Level Hydration
- Sticky or Heavy Texture
- No Barrier Support
- Immediate plump that fades
- High-concentration Actives Disrupt Balance
12 Science-Backed Ingredients
Portulaca Oleracea (Purslane)
- Strengthens barrier function
- Reduces moisture loss
- Calms stressed + reactive skin
White Snow Mushroom
- Delivers powerful water-binding hydration
- Visibly plumps fine lines caused by dehydration
- Enhances visible radiance & smoothness
Niacinamide (Vitamin B3)
- Clinically studied to improve uneven tone
- Strengthens skin barrier function
- Refines the appearance of enlarged pores
Hyaluronic Acid
- Clinically proven to deliver intense hydration
- Improve skin smoothness & elasticity
- Visibly plumps fine lines caused by dehydration
Red Algae
- Rich in polysaccharides to increase hydration
- Improves skin elasticity & visible firmness
- Supports a smoother, luminous complexion
Copper PCA
- Supports skin vitality & resilience
- Helps maintain balanced moisture levels
- Contributes to overall skin clarity
Licorice Root Extract
- Brightens & improves radiance
- Dramatically evens skin tone
- Promotes a more even-looking complexion
Glycerin
- Clinically proven to increase hydration
- Visibly plumps & smooths fine lines
- Improves skin softness & smoothness
Zinc PCA
- Maintains balanced hydration without drying
- Regulates excess sebum production
- Supports clearer skin
Pea Extract
- Supports firmness & elasticity
- Smooths & softens
- Promotes even skin texture
Laminaria Saccharina Algae
- Enhances moisture retention & skin hydration
- Supports improved elasticity & plumps
- Strengthens barrier for smoother skin
Butylene Glycol
- Clinically proven humectant that increases water content
- Maintains long-lasting moisture balance
- Contributes to lightweight, fast-absorbing finish
The Hidden Reason It Works
SundaSkin Serum is formulated with a multi-layer hydration system that combines low-molecular-weight humectants, marine polysaccharides, fermented botanicals, & barrier-supporting actives to improve moisture retention at multiple levels.
Instead of short-lived surface level hydration and plumping, it reinforces the skin barrier, reduces moisture loss, and supports sustained hydration - results feel deeper and last longer.
DERMATOLOGIST-INFORMED HYDRATION STANDARD
SundaSkin™ follows established dermatology principles for effective, long-term hydration::
- Multi-layer humectants increase water content in the stratum corneum
- Barrier-supporting actives reduce transepidermal water loss (TEWL)
- Fermented botanicals calm visible irritation and support resilience
- Marine polysaccharides enhance moisture retention and elasticity
- Balanced hydration improves tone, texture, and skin luminosity
This is clinically informed hydration designed for lasting skin health.
What SundaSkin Does For Skin
Vegan
Cruelty-Free
Clean Formulas
Clinically inspired hydration + glow
Safe for sensitive skin
Vegan
Cruelty-Free
Clean Formulas
Clinically inspired hydration + glow
Safe for sensitive skin
Trusted By Thousands
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Why SundaSkin Wins Against Other Serums
| Benefits | Luxury Hydrating Serum |
RECOMMENDED
SundaSkin
|
Drugstore Hydrating HA Serums |
|---|---|---|---|
| Cleans without stripping | Sometimes |
yes
|
Rarely |
| Hydrates during cleansing | Moderate |
High
|
Low |
| Barrier-supportive | Partial |
Linoleic acid + shea + glycerin
|
Rare |
| Makeup + SPF removal | Moderate |
Excellent
|
Inconsistent |
| Research-backed botanicals | 1–2 |
8
|
Minimal |
| Gentle surfactant system | Mixed |
Low-irritancy
|
Often harsh |
| Sensitive-skin safe | Variable |
Yes
|
Rare |
| Price-to-performance | High |
Exceptional
|
Moderate |
| Ingredient transparency | Partial |
Full research data
|
Minimal |
Frequently Asked Questions
SundaSkin™ is a lightweight hydrating serum that delivers immediate plumping + long-lasting moisture while supporting skin barrier function for smoother texture and a luminous glass-skin finish. In a clinical study, it increased hydration 24% from baseline in 4 weeks, showing measurable hydration—not just temporary surface plumping.
Many hyaluronic acid serums focus on one humectant for quick plumpness, but shoppers still complain about tightness returning or product feeling sticky/pilling. SundaSkin™ goes beyond basic HA by using a multi-layer hydration system (humectants + low-molecular-weight sodium hyaluronate + marine polysaccharides + fermented botanicals + barrier-supporting actives) to help hydration last longer and skin look more even and luminous.
SundaSkin™ is designed to be fast-absorbing and non-sticky, so it layers smoothly under moisturizer, SPF, and makeup. Pilling usually happens when a serum stays wet on the surface or is layered too quickly; apply 1–2 pumps to slightly damp skin, wait ~30–60 seconds, then seal with moisturizer.
Yes—SundaSkin™ is a lightweight face serum that hydrates without feeling heavy. It’s built for balanced hydration (so skin looks plump and smooth without greasy shine) and is suitable for combination and oily skin types that still experience dehydration.
Yes—SundaSkin™ is a great “support serum” to layer with actives because it helps maintain hydration and skin comfort. A common dermatologist-style routine is:
AM: Vitamin C → SundaSkin → Moisturizer → SPF
PM: Retinol (if using) → SundaSkin → Moisturizer
SundaSkin™ is designed for sensitive and barrier-compromised skin, especially when you need hydration without heaviness. If you’ve had an in-office procedure (peel, laser, microneedling), follow your provider’s instructions first - hydrating serums can be appropriate post-procedure depending on the treatment and your provider’s protocol.
