Nihon Antioxidant Serum
Nihon Antioxidant Serum
Nihon Antioxidant Serum is formulated to shield and rejuvenate sensitive skin with powerful antioxidants. Infused with Sodium Ascorbyl Phosphate, Vitamin E, and Ferulic Acid, this gentle serum protects against free radicals, reduces fine lines, and enhances your natural glow. Clinically tested for sensitive skin, Nihon delivers visible radiance and long-lasting protection without irritation.
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Powerful Protection: Vitamin E neutralizes free radicals to shield skin.
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Brightening Glow: Sodium Ascorbyl Phosphate enhances radiance.
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Anti-Aging Support: Ferulic Acid reduces fine lines and wrinkles.
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Gentle Formula: Safe and soothing for sensitive skin.
Key Benefits
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"Powerful Protection": Neutralizes free radicals with Vitamin E.
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"Brightening Boost": Enhances glow with Sodium Ascorbyl Phosphate.
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"Anti-Aging": Reduces fine lines with Ferulic Acid.
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"Gentle Formula": Safe for sensitive skin.
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Natural Ingredients
Natural Ingredients
Aqua, Squalane, Sodium Ascorbyl Phosphate, Pentylene Glycol, Simmondsia Chinensis (Jojoba) Esters, Dimethyl Isosorbide, Cetearyl Olivate, Sorbitan Olivate, glycerin, 3-Glyceryl Ascorbate, Phenoxyethanol, Cetyl Alcohol, Sodium PCA, Ganoderma Lucidum (Mushroom) Extract, Ethylhexylglycerin, Tocopheryl Acetate, Sodium Phytate, Kojic Acid Dipalmitate, Ferulic Acid, Citrus Medica Limonum (Lemon) Oil, Beta Glucan, Acacia Dealbata (Mimosa) Wax, Xanthan Gum, Sclerotium Gum Pullulan, Lecithin, Pentylene Glycol, Sodium Acetylated Hyaluronate Crosspolymer, Hydrolyzed Sodium Hyaluronate.
Key Benefits
Key Benefits
Powerful Protection: Neutralizes free radicals with Vitamin E.
- Brightening Boost: Enhances glow with Sodium Ascorbyl Phosphate.
- Anti-Aging: Reduces fine lines with Ferulic Acid.
- Gentle Formula: Safe for sensitive skin.
How to use
How to use
Apply 3-5 drops to clean skin in the morning after KIREI Cleanser. Follow with RYO Moisturizer for lasting hydration
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Advanced Antioxidant Shield
Defends against pollution and UV damage
Brightening Power
Evens tone and restores healthy glow
Strengthens Skin Barrier
Reduces redness and sensitivity
Lightweight Formula
Absorbs quickly without residue
Clean Beauty Certified
No parabens, sulfates, or synthetic fragrance
Gently Cleanses
Lift impurities without stripping moisture with Aloe Vera and a soft, balanced foam.
Soothes + Reduces Redness
Calm irritation and refresh sensitive skin with Cucumber Extract.
Supports a Healthy Barrier
Maintain hydration and protect your skin’s natural balance with a pH-friendly formula.
Protection, Done Properly
A few drops each morning help defend and brighten without overwhelming the skin. Lightweight in texture, intentional in formulation—NIHON works quietly to support resilience and radiance.
Your Everyday Calm & Hydration Ritual
GOOD FOR:
All skin types
A Multi-Tasking Formula
A gentle, cushiony foam that cleanses, soothes, and refreshes without stripping your skin.
FRAGANCE-FREE
Pure, gentle care with zero added fragrance.
FYI:
Cruelty-Free • USA Made • Dermatologist-Tested • FDA Compliant
How to Use Nihon
1. Prepare
Apply after cleansing with KIREI, while skin is clean and slightly damp.
2. Protect
Dispense 3–5 drops and press gently into the face and neck. Allow the formula to absorb fully—no rubbing, no rush.
3. Seal
Follow with RYO Emulsion Gel Moisturizer to lock in hydration and support lasting antioxidant protection.
Clean, Calming & Essential Ingredients
Created by someone who understands Sensitive Skin
From Our Founder
"NIHON was created from a simple belief: protection should feel effortless.
As someone with sensitive skin, I struggled to find antioxidant serums that didn’t irritate or overwhelm my barrier. Many formulas were either too strong, too unstable, or layered poorly under moisturizer and sunscreen.
I wanted to develop a daily defense that felt light, precise, and calm — something that supports the skin quietly over time. NIHON is designed to help brighten and protect without discomfort, allowing sensitive skin to build resilience gradually.
For me, NIHON represents prevention done properly — gentle, consistent, and intentional."
— Dr. Maria Urbani, M.D.
Founder, IKI Skin Care
The Lab
NIHON is developed in a certified dermatological laboratory, where stability and tolerance are prioritized in every batch. Each formula is tested for safety, purity, and performance, ensuring it remains effective while being suitable for sensitive skin.
Free from parabens, sulfates, and synthetic fragrances, NIHON combines carefully selected antioxidants in a lightweight texture designed for daily use.
Precise formulation. Measured performance. Thoughtful protection.
Adding NIHON in the Complete IKI Skincare Routine
☀︎ Morning Ritual
Begin with KIREI to gently cleanse and refresh the skin without disrupting its natural barrier. Follow with NIHON Antioxidant Serum to help protect against daily environmental stressors and support a healthy glow. Finish with RYO Emulsion Gel Moisturizer to deliver lightweight hydration and maintain balance throughout the day.
A calm, protective start that prepares your skin for everything ahead.
☾ Night Ritual
Cleanse with KIREI to remove impurities, sunscreen, and daily buildup while preserving comfort. Apply KIDO Brightening Serum or IZUMI Regenerating Serum to target tone, renewal, or firmness based on your skin’s needs. Seal in hydration with RYO to support overnight recovery and reinforce the skin barrier.
A simple evening structure that allows your skin to restore, renew, and strengthen while you rest.
What Customers Are Saying
Questions check here
What does NIHON do for my skin?
What does NIHON do for my skin?
NIHON protects against pollution, UV exposure, and environmental stress with a blend of Vitamin C, Vitamin E, and Ferulic Acid.
Is NIHON suitable for daily use?
Is NIHON suitable for daily use?
Yes. NIHON is safe for both morning and night use to maintain antioxidant protection throughout the day.
Can NIHON help reduce fine lines?
Can NIHON help reduce fine lines?
Yes. Its antioxidant blend supports collagen synthesis and defends against early signs of aging.
Should I apply NIHON before or after moisturizer?
Should I apply NIHON before or after moisturizer?
Apply NIHON after cleansing and before moisturizer for best absorption and efficacy.
Can NIHON replace my Vitamin C serum?
Can NIHON replace my Vitamin C serum?
Yes. NIHON delivers brightening and antioxidant benefits using a stable, gentle form of Vitamin C suitable for sensitive skin.
Is NIHON fragrance-free?
Is NIHON fragrance-free?
Yes. It contains no synthetic fragrance — only the natural aroma of its clean actives.
How long until I notice results?
How long until I notice results?
You’ll likely see enhanced radiance and smoother texture within 2–4 weeks of consistent use.
Can I layer NIHON with IZUMI or RYO?
Can I layer NIHON with IZUMI or RYO?
Yes. Use NIHON in the morning for protection and IZUMI or RYO at night for hydration and regeneration.
Is NIHON suitable for sensitive or reactive skin?
Is NIHON suitable for sensitive or reactive skin?
Absolutely. NIHON is formulated with a gentle, irritation-free antioxidant blend.
Is NIHON cruelty-free and vegan?
Is NIHON cruelty-free and vegan?
Yes. NIHON is 100% vegan, cruelty-free, and meets IKI’s clean beauty standards.
