KLAIRS Freshly Juiced Vitamin Drop — Vitamine C douce pour peaux réactives

This serum focuses on a concentration of Vitamin C pure (Ascorbic Acid) at 5% — an intentionally moderate dosage for reactive skin. At this level, ascorbic acid stimulates collagen synthesis, neutralizes free radicals, and inhibits melanin production, without causing the redness or peeling often seen with 15-20% formulas.

Centella Asiatica Extract — The ultimate soothing active ingredient. Its triterpene compounds (madecassoside, asiaticoside) modulate inflammatory pathways and strengthen the skin barrier, creating a buffering effect against the mild acidity of vitamin C.

Yuzu (Citrus Junos) Fruit Extract — A Japanese citrus rich in antioxidant flavonoids. It boosts radiance while providing a natural aromatic freshness.

Sodium Ascorbyl Phosphate — A stable vitamin C derivative, included alongside pure ascorbic acid. It extends antioxidant action and offers documented antimicrobial effects against P. acnes.

sh-Oligopeptide-1 and sh-Oligopeptide-2 — Biomimetic peptides that add a rare anti-aging dimension to a vitamin serum at this price.

☀️ Morning routine

1. After your toner (never on bare skin: ascorbic acid needs a slightly buffered pH)
2. Put 3-4 drops in the palm — avoid using the dropper directly on your face
3. Gently pat all over your face, avoiding the eye area
4. Wait 1-2 minutes before applying your moisturizer
5. SPF 50+ is mandatory: vitamin C boosts protection but never replaces sunscreen

🌙 Evening routine

1. Same protocol as in the morning, but without the SPF requirement
2. If you use an exfoliant (AHA/BHA), apply it after the Vitamin Drop, never before — risk of cumulative irritation
3. For very sensitive skin: mix 2-3 drops directly into your night cream for the first few weeks

Storage: refrigerate the bottle to prolong stability. Slight yellowing is normal (oxidation), but if the serum turns brown-orange, replace it.

• Sensitive skin seeking radiance — You’ve always wanted to try vitamin C but fear the tingling sensation. This 5% concentration is your gentle entry point.
• Dull complexion or marked by post-inflammatory hyperpigmentation — Acne scars, light sun spots: the gradual but steady action of ascorbic acid reduces them without irritation.
• First signs of aging (fine lines, loss of firmness) — The vitamin C + peptides synergy supports collagen production without a complex routine.
• Fans of minimalist layering — Watery texture, instant absorption: perfect if you layer multiple steps without a sticky feel.

Avoid if:

• You’re looking for a dramatic “before/after” effect in 2 weeks — then prefer a 15-20% serum (but prepare your skin)
• You’re allergic to essential oils (lavender, orange) — the formula contains traces
• You’ve just chemically exfoliated your skin (wait 24h before applying)

From the very first applications : a subtle brightness, like a natural filter — the immediate "awakened skin" effect.

After 4 weeks of daily use : the skin texture refines, recent acne marks gradually fade. The complexion becomes more even.

At 8-12 weeks : old pigmentation spots visibly lighten. The skin appears plumper, dehydration fine lines are reduced. The cumulative action of ascorbic acid reveals its anti-aging potential.

No "miracle" promise here — just steady improvement, documented by 4 million units sold worldwide and a host of international awards (Best of K-Beauty Soko Glam 2022, #1 Serum Amazon JP 2021-2022, Reviewty Awards 2023).

Why 5% vitamin C and not 10 or 20% like other serums?

KLAIRS chose an "efficacy without irritation" approach. At 5%, ascorbic acid provides real antioxidant protection, stimulates collagen, and inhibits melanin — but without the redness, peeling, or burning sensations often seen with higher concentrations. Ideal for beginners or if your skin is reactive.

The serum has turned yellow/orange, can I still use it?

A slight yellowing is normal (natural oxidation of ascorbic acid). However, if the color turns dark orange-brown or the smell changes, the effectiveness is compromised — better to replace it. Tip: store it in the fridge in its cardboard box to prolong its freshness.

Can I combine it with the KLAIRS Freshly Juiced Vitamin E Mask?

Absolutely, it’s even recommended! Vitamin E stabilizes vitamin C and extends its antioxidant action. Apply the Vitamin Drop first, then the E-Mask as the last step in your nighttime routine.

Can I use it during the day or only at night?

Both are possible, but essential: SPF 50+ if you apply it in the morning. Vitamin C enhances photoprotection but never replaces sunscreen. If you’re starting out, begin with nighttime use to observe your skin’s tolerance.

What’s the difference with the KLAIRS Freshly Juiced Vitamin Charging Serum?

The Vitamin Drop contains 5% pure ascorbic acid (pH 3.8, more acidic). The Charging Serum uses 10% 3-O-Ethyl Ascorbic Acid, a more stable derivative (pH 5.9, less irritating). The Drop is more affordable and ideal for first-time vitamin C users. The Charging Serum is recommended for accustomed skin or those seeking faster action.

How long does a 35ml bottle last?

With 3-4 drops per day (daily use), expect about 2.5 to 3 months. If you use it morning and night, more like 6 to 8 weeks. Remember to close the dropper tightly after each use to limit oxidation.

Dear, Klairs was born in 2010 from a simple intention: to give sensitive skin access to effective active ingredients from which it is often excluded. The name "Dear, Klairs" evokes a letter addressed to Klair, a fictional character representing all those who suffer from skin reactivity and feel forgotten by the cosmetics industry.

The brand rejects the race for overloaded formulas and adopts the philosophy "Simple but enough" — clean compositions without colorants, parabens, drying alcohols, or synthetic fragrances. Cruelty-free and certified vegan (PETA, KARA), KLAIRS is also committed to the environment with recycled packaging and recycling campaigns like "Use Well, Re-Use Well."

The Freshly Juiced Vitamin Drop, launched during the wave of high-concentration vitamin C serums, made an impression with its bold opposite approach: offering less vitamin C to reach more people. The result? Over 4 million units sold, dozens of international awards, and a cult status among sensitive K-beauty enthusiasts. Discover the entire KLAIRS range

Complete INCI: Aqua (Water), Propylene Glycol, Ascorbic Acid, Hydroxyethylcellulose, Centella Asiatica Extract, Citrus Junos Fruit Extract, Illicium Verum (Anise) Fruit Extract, Citrus Paradisi (Grapefruit) Fruit Extract, Nelumbium Speciosum Flower Extract, Paeonia Suffruticosa Root Extract, Scutellaria Baicalensis Root Extract, Polysorbate 60, Brassica Oleracea Italica (Broccoli) Extract, Chaenomeles Sinensis Fruit Extract, Citrus Aurantium Dulcis (Orange) Oil, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Disodium EDTA, Lavandula Angustifolia (Lavender) Oil, Camellia Sinensis Callus Culture Extract, Larix Europaea Wood Extract, Chrysanthellum Indicum Extract, Rheum Palmatum Root Extract, Asarum Sieboldi Root Extract, Quercus Mongolia Leaf Extract, Persicaria Hydropiper Extract, Corydalis Turtschaninovii Root Extract, Coptis Chinensis Root Extract, Magnolia Obovata Bark Extract, Lysine HCL, Proline, Sodium Ascorbyl Phosphate, Acetyl Methionine, Theanine, Lecithin, Acetyl Glutamine, sh-Oligopeptide-1, sh-Oligopeptide-2, sh-Polypeptide-1, sh-Polypeptide-9, sh-Polypeptide-11.

Hypoallergenic formula tested on sensitive skin (Primary Skin Irritation Test completed). pH 3.8. Paraben-free, sulfate-free, free of artificial colorants. Contains traces of essential oils (orange, lavender) — patch test recommended if known allergy.