Description

Hyaluronic Acid (Low Molecular Weight) — Deep Penetrating Hydration for Advanced Skin Repair

Hyaluronic Acid (Low Molecular Weight), supplied as Sodium Hyaluronate, represents one of the most advanced hydration actives in modern cosmetic formulation. Unlike high molecular weight variants that sit on the skin’s surface, LMW HA penetrates deeper into the epidermis, supporting hydration at a functional level, improving elasticity, and enhancing the performance of surrounding actives.

Naturally present in the skin, hyaluronic acid plays a critical role in maintaining moisture balance and tissue lubrication. However, its levels decline with age and environmental stress. Scientific research shows that hyaluronic acid can bind up to 1000 times its weight in water, making it one of the most effective humectants known in cosmetic science.

At Skin Foodie, Low Molecular Weight Hyaluronic Acid is positioned as a deep hydration active, not just a surface moisturizer.

With a molecular weight ≤20 kDa, this grade operates within the upper layers of the epidermis to improve functional hydration, skin elasticity, and active delivery, making it ideal for treatment-focused formulations where performance matters.

Technical Details

• INCI: Sodium Hyaluronate
• Appearance: White powder
• Origin: France
• Molecular Weight: ≤ 20 kDa (LMW)
• Purity: 99%
• pH (1% solution): 5 – 7.5
• Solubility: Water soluble
• Recommended Usage: 0.01 – 2%
• Form: Powder (requires hydration)

Why Formulators Love It

Deep Functional Hydration

Penetrates beyond the surface to hydrate the epidermis more effectively than high molecular weight HA.

Enhances Active Delivery

Improves the absorption and performance of co-actives in advanced formulations.

Skin Plumping & Elasticity

Supports smoother, firmer-looking skin through improved hydration balance.

Versatile Across Systems

Works seamlessly in serums, gels, emulsions, and scalp treatments.

Common Uses in Formulation

• Hydrating serums
• Anti-aging treatments
• Barrier repair formulations
• Eye creams
• Gel moisturizers
• Scalp hydration treatments

Benefits

Skin Benefits

• Deep, long-lasting hydration
• Improves skin elasticity and suppleness
• Reduces the appearance of fine lines
• Supports smoother, more refined texture
• Enhances skin resilience

Formulation Benefits

• • High-performance humectant system
  • Improves sensory feel of aqueous formulations
  • Enhances penetration of active ingredients
  • Compatible with a wide range of actives

Pro Tips 

• Pre-disperse in glycerin before adding to water to prevent clumping
• Use at 0.1–0.5% for daily hydration, up to 2% for intensive treatments
• Combine with emollients to prevent transepidermal water loss
• Ideal in gel systems with carbomer or xanthan gum
• Pair with peptides or niacinamide for advanced formulations

Formulation Pairing — Multiple Intelligent Pathways

Hydration Core System

Hyaluronic Acid + Glycerin + Panthenol
→ Immediate + sustained hydration

Advanced Repair System

Hyaluronic Acid + Hydrolyzed Collagen Peptides + Niacinamide
→ Hydration + structure + barrier support

Acne-Safe Hydration System

Hyaluronic Acid + Niacinamide + Zinc PCA
→ Oil control + hydration balance

Barrier Recovery System

Hyaluronic Acid + Ceramides + Baobab Oil
→ Moisture retention + lipid repair

Hyaluronic Acid Pairs Well With 

To maximize performance, combine Low Molecular Weight Hyaluronic Acid with:

• Niacinamide — barrier strengthening and tone improvement
• Panthenol — soothing hydration and repair
• Glycerin — boosts immediate moisture levels
• Ceramides — locks in hydration and strengthens barrier
• Hydrolyzed Collagen Peptides — improves elasticity and smoothness
• Aloe Vera Extract — soothing and calming hydration
• Beta Glucan — a superior humectant + soothing active that enhances hydration while calming inflammation and supporting wound repair
• Green Tea Extract — antioxidant protection + reduces oxidative stress
• Gotu Kola Extract — supports collagen synthesis and skin repair
• Caprylic/Capric Triglyceride or C12-15 Alkyl Benzoate — seals hydration with a lightweight emollient layer

Ingredient Comparisons & Alternatives

Low Molecular Weight vs High Molecular Weight HA

LMW penetrates deeper; HMW forms a surface hydration film.

Hyaluronic Acid vs Glycerin

Glycerin hydrates quickly; HA provides longer-lasting structured hydration.

Hyaluronic Acid vs Beta-Glucan

Beta-glucan offers hydration + soothing; HA focuses on hydration + plumping.

Formulation Inspiration

Deep Hydration Repair Serum 

Phase A (Water Phase)

• Distilled Water — 89%
• Glycerin — 3%
• Hyaluronic Acid (LMW) — 0.5%
• Niacinamide — 4%
• Panthenol — 2%

Phase B (Gelling System)

• Xanthan Gum — 0.5%

Phase C (Cool Down)

• Preservative — 0.8% (or as per guidelines)

Creates a non-sticky, deeply hydrating serum that improves both immediate feel and long-term skin performance.

FAQs

1. What makes this low molecular weight?
It has a molecular weight ≤20 kDa, significantly smaller than conventional HA, enabling deeper hydration.

2. Can it be used daily?
Yes. It is gentle and suitable for daily use.

3. Does it replace moisturizers?
No. It hydrates but should be paired with emollients to lock in moisture.

4. Is it suitable for oily skin?
Yes. It hydrates without adding oil or clogging pores.

5. Can beginners formulate with it?
Yes. It is one of the most beginner-friendly high-performance actives.

Shelf Life & Storage

• Shelf Life: ~2 years
• Store in a cool, dry place
• Protect from moisture
• Keep container tightly sealed

The Skin Foodie Formulation Standard

At Skin Foodie, we believe exceptional skincare begins with exceptional ingredients and intelligent formulation design. Our ingredients are carefully sourced to help formulators create products that are effective, stable, and beautifully balanced.

Because in formulation science, selecting the right ingredient is only the beginning, how you combine them is what defines performance.

Disclaimer

For cosmetic formulation use only. Not for ingestion.
All formulations should be tested for stability and compatibility.
This information is for educational purposes only and not medical advice.