HYA3 Hydrating Repair Serum 30ml | Quadruple Hyaluronic Acid · Deep Hydration · Powerful Moisture Lock | Made in Hong Kong

Is your skin hydrated enough? Dryness, dullness, and fine lines often indicate a lack of water, not just oil.

HYA3 Hydrating & Repairing Serum, with a core concentration of 3% total hyaluronic acid in four different molecular weights, delivers hydration layer by layer from the skin's surface to the dermis. Combined with Panthenol for barrier repair, it restores your skin to a plump, hydrated, and elastic state from within.

🇭🇰 Developed by Hong Kong formulators and manufactured locally in Hong Kong
Developed and Made in Hong Kong.

30ml｜Lasts approximately 2–3 months

✦ What problems does this serum solve for you?

• Dry, tight, dull skin

• Surface hydration that doesn't last

• Fine lines that appear more prominent due to dryness

• Flaky skin and makeup that doesn't adhere well after application

• Weak skin barrier, prone to redness and sensitivity

✦ Why does your skin need these ingredients?

① Quadruple Hyaluronic Acid, 3% high concentration for full-layer hydration
Most hydrating serums on the market only use a single molecular weight of hyaluronic acid, which only works on the skin's surface. HYA3 uses four different molecular weights of Hyaluronic Acid to hydrate at various depths of the skin, from the epidermis to the dermis, comprehensively addressing dryness.

② Ultra-fine ~5 kDa Low Molecular Weight HA — Truly penetrates the dermis
Most "low molecular weight hyaluronic acid" products on the market are still around 20–30 kDa, which is still too large to penetrate the stratum corneum effectively. HYA3 uses advanced Hydrolysis Technology to reduce Hyaluronic Acid to approximately 5 kDa, allowing it to quickly penetrate the stratum corneum and reach the epidermis and dermis for true deep hydration.

③ Crosspolymer HA — Protective net to lock in moisture and resist pollution
Crosspolymer Hyaluronic Acid forms a biomimetic protective network on the skin's surface, reducing moisture loss while also defending against PM2.5 and UV damage. It also inhibits Hyaluronidase activity, preventing the breakdown and loss of the skin's natural hyaluronic acid, leading to longer-lasting hydration.

④ Panthenol repairs the barrier, reduces sensitivity
Panthenol (Vitamin B5) is a scientifically proven effective humectant that attracts moisture from the air and repairs the skin barrier structure, reducing sensitivity and irritation. This means every hydration step also strengthens your skin's defenses.

⑤ Precise ratio formulation, no pilling with makeup
Hyaluronic acid products often cause pilling with makeup due to an imbalance of high molecular weight HA. HYA3's formulators conducted multiple tests to carefully adjust the molecular ratios of the four types of HA, ensuring a refreshing texture after use and smoother, more adherent makeup. It is suitable for both morning and evening skincare routines.

✦ Benefits

• Instant Hydration: Low molecular weight HA penetrates quickly, instantly relieving dryness and tightness

• Long-lasting Moisture Lock: Multi-layer molecules work synergistically to maintain all-day hydration

• Smooths Dry Fine Lines: Fine lines are visibly reduced after skin is thoroughly hydrated

• Barrier Repair: Panthenol strengthens the skin's natural protective function

• Anti-pollution Protection: Crosspolymer HA defends against PM2.5 and UV oxidative damage

✦ Texture

A clear, watery serum with a lightweight, easy-to-spread texture. It absorbs quickly into the skin without feeling sticky or leaving a white residue, providing an immediate boost in skin hydration. Ideal as the first step in your skincare routine, it layers well with other serums and moisturizers without pilling.

✦ Active Ingredients

Quadruple Hyaluronic Acid (HA) — Total concentration 3%

Panthenol (Vitamin B5)
An effective humectant and barrier-repairing ingredient that attracts moisture and strengthens the skin barrier structure, reducing sensitive reactions.

✦ Ingredients List

Water, Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid, Hyaluronic Acid Crosspolymer, Sodium Hyaluronate Crosspolymer, Panthenol, Glycerin

✦ Suitable For

• All skin types, including sensitive, oily, and dry skin

• Individuals with dry, dull, or inelastic skin

• Individuals whose skin easily dehydrates in air-conditioned environments

• Individuals who prioritize makeup adherence and need a hydrating base

• Individuals new to cosmeceuticals who want to start with gentle ingredients

✦ Free From Statement

✅ Alcohol-free
✅ Fragrance-free
✅ Paraben-free
✅ MIT (Methylisothiazolinone)-free

✦ How to Use

1. After cleansing in the morning and evening, use as the first serum in your skincare routine

2. Dispense 1/3 to one pump into your palm, and gently press onto your face and neck

3. Adjust the amount as needed based on your skin condition and the humidity of the weather

4. Follow with other serums and moisturizers

⚠️ It is recommended to perform a patch test behind the ear or on the inner forearm before use. Avoid contact with eyes and open wounds.

✦ Formulator Q&A

Q: Many hyaluronic acid products pill when used with makeup. How does HYA3 avoid this problem?

A: Generally, if hyaluronic acid products contain too high a proportion of high molecular weight HA, they can form small "eraser-like" flakes on the skin, affecting makeup application. To solve this problem, the formulators conducted multiple formulations and tests, carefully adjusting the ratios of the four hyaluronic acid molecular weights to ensure that HYA3 not only prevents pilling but also makes makeup smoother and more adherent.

Q: There are many hyaluronic acid serums on the market. What makes HYA3 different?

A: Most "low molecular weight hyaluronic acid" products on the market still have molecular weights as high as 20–30 kDa, which cannot truly penetrate the stratum corneum. HYA3 uses advanced hydrolysis technology to reduce HA to approximately 5 kDa, making it one of the few formulas on the market that can truly achieve deep penetration and hydration. Coupled with the synergistic effect of four molecular weights, both the depth and breadth of hydration surpass single HA products.

Q: Is HYA3 suitable for sensitive skin?

A: Yes, it is. HYA3's formula includes Panthenol (Vitamin B5) to help repair the skin barrier and reduce sensitive reactions. The overall formula is alcohol-free, fragrance-free, paraben-free, and MIT-free, making it gentle and safe for individuals with sensitive skin. It is recommended to perform a patch test before initial use.

Q: Can HYA3 be layered with other serums?

A: Yes. HYA3 is designed as the first serum in your skincare routine. Its clear, watery texture layers well with other serums (such as retinol serums, niacinamide serums, etc.) without pilling or rolling. Once absorbed, you can directly apply other skincare products.

Q: Is HYA3 suitable for oily skin?

A: Absolutely. Oily skin is often "oily on the outside, dry on the inside," meaning that the skin overproduces sebum due to a lack of hydration. HYA3's clear, non-sticky, watery formula effectively replenishes skin moisture, helping to balance oil and water levels and improve oiliness.

✦ Why Choose HYA3?

Hydration is never just about "applying it." Truly effective hydration requires getting the ingredients to where the skin needs them. Every design decision for HYA3 — four molecular weights, precise concentration, and non-pilling ratio — stems from the formulators' deep research into ingredients and their unwavering pursuit of results.

Hydrated skin, starts with science.

HYA3 is developed by a team of Hong Kong formulators and manufactured locally in Hong Kong. Every drop of serum embodies a dedication to skincare ingredients and a promise to your skin.
🇭🇰 Proudly Developed & Made in Hong Kong.