Rejuran Pore Tightening Ampoule vs Paula's Choice 1% Retinol Booster

Rejuran

Paula's Choice

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

A serum built around Retinoid and Ceramide, for barrier repair and hydration.

Serum

25 ingredients

27 ingredients

Brand price

USD 42.00 · checked 28 Sept 2026 · brand's site

Brand price

USD 55.00 · checked 8 Oct 2026 · brand's site

No retailer listed yet

Brand from South Korea

Brand country not recorded

At a Glance

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

Panthenol (provitamin B5)1
Provitamin B5 — a humectant and soother.
Panthenol
Polysorbates (Tween emulsifiers)1
Polysorbate (Tween) emulsifiers.
Polysorbate 20
Hyaluronic acid2
Hyaluronic acid and its salts; a humectant that binds water to the skin.
Hyaluronic Acid, Sodium Hyaluronate
Niacinamide1
Vitamin B3 — supports the barrier and evens tone.
Niacinamide

Ceramide1
Skin-identical lipids that hold the barrier together.
Ceramide NP
Colloidal oatmeal1
Finely milled oat — an FDA-recognised skin protectant.
Avena Sativa Kernel Extract
Polysorbates (Tween emulsifiers)1
Polysorbate (Tween) emulsifiers.
Polysorbate 20
Retinoid1
Vitamin A derivatives that speed cell turnover.
Retinol

Hydrating5
Boosts hydration and relieves dry, tight skin.
Butylene Glycol, Ceramide NP, Dipotassium Glycyrrhizate, Glycerin, Glyceryl Ascorbate
Barrier Repair6
Strengthens and restores the skin's natural barrier.
Allantoin, Avena Sativa Kernel Extract, Caprylyl Glycol, Carthamus Tinctorius Seed Oil, Ceramide NP, Glycerin
Reduces Irritation3
Eases discomfort and supports skin resilience.
Allantoin, Avena Sativa Kernel Extract, Dipotassium Glycyrrhizate
Redness Reducing1
Soothes visible redness and calms irritation.
Allantoin

May Worsen Seborrheic Dermatitis2
May feed the yeast involved in seborrheic dermatitis.
Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Polysorbate 20
May Worsen Irritation1
May cause stinging, redness or sensitivity.
Fragrance
May Worsen Eczema1
May worsen itching or irritation for eczema-prone skin.
Fragrance
May Worsen Rosacea1
Can trigger flare-ups in rosacea-prone skin.
Fragrance

Show highlights for:

Water (in both products)
Skin Conditioning
Butylene Glycol (in both products)
Humectant
1 / 0
- Hydrating
Niacinamide
Smoothing
0 / —
- Niacinamide
- Acne Fighting
- Barrier Repair
- Brightening
- Dark Spots
- Even Tone
- Oil Control
- Pore Refining
- Redness Reducing
Morus Nigra Leaf Extract
Skin Conditioning
Salix Alba Bark Extract
Skin Conditioning
1,2-Hexanediol
Skin Conditioning
Vaccinium Angustifolium Fruit Extract
Skin Protecting
Glycyrrhiza Glabra Root Extract
Emollient
- Brightening
- Redness Reducing
- Reduces Irritation
Calendula Officinalis Flower Extract
Skin Conditioning
Yeast Extract
Skin Conditioning

Water (in both products)
Skin Conditioning
Glycerin (in both products)
Humectant
0 / 0
- Possibly animal-derived
- Hydrating
Carthamus Tinctorius Seed Oil
Skin Conditioning
0 / 0
- Plant oils and butters (coconut, olive, shea)
- Plant or mineral oil
- Barrier Repair
- May Worsen Oily Skin
- May Worsen Seborrheic Dermatitis
Polyglyceryl-10 Caprylate/Caprate
Cleansing
Butylene Glycol (in both products)
Humectant
1 / 0
- Hydrating
Pyrus Malus Fruit Extract
Skin Conditioning
Polysorbate 20 (in both products)
Cleansing
0 / 0
- Fatty esters (glyceryl stearate, PEG-100 stearate)
- Polysorbates (Tween emulsifiers)
- May Worsen Seborrheic Dermatitis
Retinol
Skin Conditioning
- Retinoid
- Acne Fighting
- Anti-Aging
- Dark Spots
- Firming
- Oil Control
- Pore Refining
- Smoothing
Glycyrrhiza Glabra
Ceramide NP
Skin Conditioning
- Ceramide
- Fatty esters (glyceryl stearate, PEG-100 stearate)
- Barrier Repair
- Hydrating
- May Worsen Seborrheic Dermatitis

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 →
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 →
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 →
Polysorbate 20
Cleansing, Emulsifying
Polysorbate 20 isn't fungal acne safe.
Learn more about Polysorbate 20 →
Allantoin
Skin Conditioning, Skin Protecting, Soothing
Urea, (2,5-dioxo-4-imidazolidinyl)-
Learn more about Allantoin →
Xanthan Gum
Binding, Emulsion Stabilising, Gel Forming, Skin Conditioning, Cleansing, Emulsifying, Viscosity Controlling
Xanthan gum
Learn more about Xanthan Gum →