10% Vitamin C + E Ferulic Acid Serum
Hyper Vitamin C 23 Serum

Timeless

10% Vitamin C + E Ferulic Acid Serum

Isntree

Hyper Vitamin C 23 Serum

A serum built around Vitamin C and Vitamin C, for hydration and barrier repair.

A serum built around Vitamin C and Vitamin C, for hydration and barrier repair.

Serum
Serum
11 ingredients
17 ingredients

Brand price

USD 23.95 · checked 8 Oct 2026 · brand's site

Brand price

Not recorded · brand's site

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At a Glance

They come out differently on EU-allergen-free and Fungal-acne-safe; those rows are shaded. Tap any answer to see why.

Key Ingredients

  • Vitamin E1

    Tocopherols — fat-soluble antioxidants.

    Tocopherol

  • Vitamin C (L-ascorbic acid)1

    L-ascorbic acid, the unesterified form of vitamin C.

    Ascorbic Acid

  • Panthenol (provitamin B5)1

    Provitamin B5 — a humectant and soother.

    Panthenol

  • Polysorbates (Tween emulsifiers)1

    Polysorbate (Tween) emulsifiers.

    Polysorbate 80

  • Vitamin E1

    Tocopherols — fat-soluble antioxidants.

    Tocopherol

  • Vitamin C (L-ascorbic acid)1

    L-ascorbic acid, the unesterified form of vitamin C.

    Ascorbic Acid

  • Vitamin C derivative (stable)1

    Stable derivatives of ascorbic acid.

    3-O-Ethyl Ascorbic Acid

  • Panthenol (provitamin B5)1

    Provitamin B5 — a humectant and soother.

    Panthenol

Benefits

Concerns

  • May Trigger Acne1

    Can clog pores or trigger breakouts.

    Tocopherol

  • May Worsen Seborrheic Dermatitis1

    May feed the yeast involved in seborrheic dermatitis.

    Polysorbate 80

  • May Worsen Keratosis Pilaris1

    May clog follicles or strip skin prone to keratosis pilaris.

    Tocopherol

  • May Worsen Irritation2

    May cause stinging, redness or sensitivity.

    Benzyl Alcohol, Tocopherol

  • May Trigger Acne1

    Can clog pores or trigger breakouts.

    Tocopherol

  • May Worsen Keratosis Pilaris1

    May clog follicles or strip skin prone to keratosis pilaris.

    Tocopherol

  • May Worsen Irritation1

    May cause stinging, redness or sensitivity.

    Tocopherol

Ingredients Side-by-side

Show highlights for:

  • Water (in both products)

    Skin Conditioning

  • Ethoxydiglycol

    Humectant

    0 / 0

  • Ascorbic Acid (in both products)

    Antioxidant

    • Vitamin C
    • Vitamin C (L-ascorbic acid)
    • Anti-Aging
    • Anti-Pollution
    • Antioxidant
    • Brightening
    • Dark Spots
    • Even Tone

  • Propylene Glycol

    Humectant

    0 / 0

  • Tocopherol (in both products)

    Occlusive

    0-3 / 3

    • Vitamin E
    • Anti-Pollution
    • Antioxidant
    • May Trigger Acne
    • May Worsen Irritation
    • May Worsen Keratosis Pilaris

  • Polysorbate 80

    Cleansing

    0 / 0

    • Fatty esters (glyceryl stearate, PEG-100 stearate)
    • Polysorbates (Tween emulsifiers)
    • May Worsen Seborrheic Dermatitis

  • Panthenol (in both products)

    Skin Conditioning

    0 / 0

    • Panthenol (provitamin B5)
    • Barrier Repair
    • Hydrating
    • Reduces Irritation

  • Ferulic Acid

    Antioxidant

    • Ferulic acid
    • Antioxidant

  • Sodium Hyaluronate

    Humectant

    0 / 0

    • Hyaluronic acid
    • Hydrating

  • Benzyl Alcohol

    Preservative

    • EU labelled fragrance allergen
    • May Worsen Eczema
    • May Worsen Irritation

Ingredients Explained

These ingredients are found in both products.

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

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