Seaweed Extract

Seaweed Extract

INCI examples: Algae Extract

Seaweed is rich in minerals, amino acids, polysaccharides, vitamins, antioxidants, and unique compounds like fucoidan and alginate, which make it excellent for skin hydration, soothing, anti-aging, and oil control.

Key Skin Benefits

1. Deep Hydration

Seaweed contains polysaccharides (alginate, carrageenan) that bind water and maintain hydration.

2. Anti-inflammatory & Soothing

Reduces redness, irritation, and sensitivity. Perfect for:

Acne skin

Sunburn

Barrier-damaged skin

3. Anti-aging

Rich in antioxidants

Helps improve firmness and elasticity

Supports collagen production

4. Oil Control & Detox

Especially brown seaweed (fucus) helps reduce excess sebum and tighten pores.

5. Brightening

Some species (e.g., red algae) improve tone and reduce dullness.

Typical Usage Rate: 1% -5%

Formulation Tips

Water soluble → add in cool-down phase (<40°C).

Compatible with:

Hyaluronic acid

Collagen

Panthenol

Aloe vera

Glycerin

Snail filtrate

Niacinamide

Marine collagen

Green tea extract

Avoid mixing with very acidic pH (<4) → may thicken or destabilize.

Natural seaweed extracts may have a marine smell thus adding a light fragrance helps.

Best For

Hydrating serums

Skin-firming creams

Soothing gels

Anti-aging products

Acne-prone or oily-skin toners

Brightening essence

Hair conditioning sprays

Scalp serums (growth + soothing)

Simple Seaweed Hydration Serum (100 g)

Phase A

Distilled water — 65%

Glycerin — 4%

Aloe vera juice — 10%

Panthenol — 2%

Phase B

Seaweed extract — 5%

Niacinamide — 4%

Hyaluronic acid solution — 2%

Phase C

Preservative — 1%

Adjust pH → 5.0–5.5