Dr.Althea 15% Niacinamide Purity Serum vs Rojukiss HYA CERAMIDE SERUM

Dr.Althea

Rojukiss

A serum built around Niacinamide and Zinc salt, for hydration and barrier repair.

A serum built around Niacinamide and Hyaluronic acid, for barrier repair and hydration.

Serum

19 ingredients

22 ingredients

Brand price

USD 23.90 · checked 26 Sept 2026 · brand's site

Brand price

Not recorded · brand's site

No retailer listed yet

Brand from South Korea

Brand from Thailand

At a Glance

They come out differently on Fragrance-free and Pore-clogger-free; those rows are shaded. Tap any answer to see why.

Vitamin E1
Tocopherols — fat-soluble antioxidants.
Tocopherol
Zinc salt (sebum/soothing)1
Zinc salts, used for sebum control and soothing.
Zinc PCA
Niacinamide1
Vitamin B3 — supports the barrier and evens tone.
Niacinamide

Ceramide1
Skin-identical lipids that hold the barrier together.
Ceramide NP
Vitamin E1
Tocopherols — fat-soluble antioxidants.
Tocopheryl Acetate
Panthenol (provitamin B5)1
Provitamin B5 — a humectant and soother.
Panthenol
Astringent (witch hazel / tannin)1
Tannin-bearing astringents such as witch hazel.
Hamamelis Virginiana Extract

Hydrating5
Boosts hydration and relieves dry, tight skin.
Butylene Glycol, Glycerin, Tocopherol, Trehalose, Zinc PCA
Barrier Repair5
Strengthens and restores the skin's natural barrier.
Glycerin, Melaleuca Alternifolia Leaf Oil, Niacinamide, Tocopherol, Vitis Vinifera Seed Extract
Reduces Irritation1
Eases discomfort and supports skin resilience.
Zinc PCA
Redness Reducing1
Soothes visible redness and calms irritation.
Niacinamide

Hydrating6
Boosts hydration and relieves dry, tight skin.
Butylene Glycol, Caprylic/Capric Triglyceride, Ceramide NP, Glycerin, Panthenol, Sodium Hyaluronate
Barrier Repair7
Strengthens and restores the skin's natural barrier.
Caprylic/Capric Triglyceride, Caprylyl Glycol, Ceramide NP, Glycerin, Niacinamide, Panthenol, Sodium Polyacrylate
Reduces Irritation2
Eases discomfort and supports skin resilience.
Hamamelis Virginiana Extract, Panthenol
Redness Reducing1
Soothes visible redness and calms irritation.
Niacinamide

May Trigger Acne1
Can clog pores or trigger breakouts.
Tocopherol
May Worsen Seborrheic Dermatitis1
May feed the yeast involved in seborrheic dermatitis.
Polyglyceryl-10 Laurate
May Worsen Keratosis Pilaris1
May clog follicles or strip skin prone to keratosis pilaris.
Tocopherol
May Worsen Irritation3
May cause stinging, redness or sensitivity.
Melaleuca Alternifolia Leaf Oil, Rosmarinus Officinalis Leaf Oil, Tocopherol

Show highlights for:

Water (in both products)
Skin Conditioning
Pentylene Glycol
Skin Conditioning
0-1 / —
Niacinamide (in both products)
Smoothing
0 / —
- Niacinamide
- Acne Fighting
- Barrier Repair
- Brightening
- Dark Spots
- Even Tone
- Oil Control
- Pore Refining
- Redness Reducing
Butylene Glycol (in both products)
Humectant
1 / 0
- Hydrating
1,2-Hexanediol (in both products)
Skin Conditioning
Glycerin (in both products)
Humectant
0 / 0
- Possibly animal-derived
- Hydrating
Polyglyceryl-10 Laurate
Emulsifying
- Fatty esters (glyceryl stearate, PEG-100 stearate)
- May Worsen Seborrheic Dermatitis
Trehalose
Humectant
0-1 / —
- Hydrating
Xanthan Gum (in both products)
Cleansing
0-1 / —
Ethylhexylglycerin (in both products)
Skin Conditioning

Water (in both products)
Skin Conditioning
Glycerin (in both products)
Humectant
0 / 0
- Possibly animal-derived
- Hydrating
Niacinamide (in both products)
Smoothing
0 / —
- Niacinamide
- Acne Fighting
- Barrier Repair
- Brightening
- Dark Spots
- Even Tone
- Oil Control
- Pore Refining
- Redness Reducing
Sodium Hyaluronate
Humectant
0 / 0
- Hyaluronic acid
- Hydrating
Panthenol
Skin Conditioning
0 / 0
- Panthenol (provitamin B5)
- Barrier Repair
- Hydrating
- Reduces Irritation
1,2-Hexanediol (in both products)
Skin Conditioning
Hydroxyacetophenone
Antioxidant
Xanthan Gum (in both products)
Cleansing
0-1 / —
Cellulose Gum
Fragrance
0 / 0
Ethylhexylglycerin (in both products)
Skin Conditioning

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Water
Antiplaque, Skin Conditioning, Solvent
Aqua (EU),Deionized Water,Distilled Water,Micromatrix Fractile AN,Onsen-Sui (JPN),Purified Water
Learn more about Water →
Niacinamide
Smoothing
Niacinamide is niacinamide.
Learn more about Niacinamide →
Butylene Glycol
Fragrance, Humectant, Skin Conditioning, Solvent, Viscosity Controlling
Butane-1,3-diol (CAS No. 107-88-0/ EC No. 203-529-7) (R)-(-)-butane-1,3-diol” (CAS No. 6290-03-5/ EC No. 228-532-0)
Learn more about Butylene Glycol →
1,2-Hexanediol
Skin Conditioning, Solvent
We don't have a description for 1,2-Hexanediol yet.
Learn more about 1,2-Hexanediol →
Glycerin
Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care, Perfuming, Humectant, Skin Protecting, Solvent, Viscosity Controlling
Glycerin may be plant, synthetic or animal depending on the supplier.
Learn more about Glycerin →
Xanthan Gum
Binding, Emulsion Stabilising, Gel Forming, Skin Conditioning, Cleansing, Emulsifying, Viscosity Controlling
Xanthan gum
Learn more about Xanthan Gum →
Ethylhexylglycerin
Deodorant, Skin Conditioning
Ethylhexylglycerin is the organic compound that conforms to the formula
Learn more about Ethylhexylglycerin →