Step 2: Serum
Vitamin C Serum
Tax excluded.
Loved by our customers
Who is this product ideal for?
Perfect for anyone looking to brighten dull skin and improve uneven tone.
Description
Vitamin C Serum
For brighter, smoother, more even-looking skin
Radiance isn’t just about surface glow - it’s about how energized your skin cells are. Our Vitamin C Serum goes beyond traditional brightening by combining two highly stable forms of Vitamin C with 5-Aminolevulinic Acid (5-ALA) to support skin clarity, smoothness, and visible vitality.
This lightweight, fast-absorbing serum helps revive dull skin, refine texture, and promote a more even, luminous complexion.
Perfect for skin that:
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Looks dull or tired
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Has uneven tone or dark spots
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Shows early signs of aging
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Needs more glow and clarity
Dual Vitamin C + 5-ALA: A new approach to glow
Unlike many Vitamin C serums that focus only on surface effects, this formula is designed to support both radiance and skin energy.
What makes it different:
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Two stable forms of Vitamin C
Deliver brightening and antioxidant benefits while helping improve the appearance of uneven tone and skin texture, without the instability often associated with pure Vitamin C. -
5-Aminolevulinic Acid (5-ALA)
Supports cell's natural energy processes, helping skin look more resilient, refreshed, and balanced over time. -
Niacinamide
Helps refine the appearance of pores, support the skin barrier, and enhance overall evenness. -
Antioxidant protection
Helps defend skin against environmental stressors that can contribute to dullness and premature aging.
Why skin energy matters
Healthy-looking skin depends on energy. By pairing Vitamin C with 5-ALA, this serum supports the biological processes that allow skin to renew, recover, and maintain its natural glow — not just temporarily, but consistently.
Results you’ll notice
With regular use, skin appears:
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Brighter and more even
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Smoother and more refined
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Fresher, energized, and naturally radiant
Why you’ll love it
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Lightweight, fast-absorbing texture
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Gentle enough for daily use
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Designed to layer seamlessly into any routine
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Supports glow & skin energy
A next-generation Vitamin C serum for brighter, energized, resilient-looking skin.
Füllmenge: 1 fl.oz. / 30ml
Packaged in Italian Glass
No Parabens or Silicones
Cruelty-free
No Perfume
GMO-free
No Microplastics

How 5-ALA supports your skin’s natural functions
The Results Our Community Loves
Refined Skin Texture
Deep Hydration
Skin in Balance
Natural Glow Booster
Preventive Skincare
These Ingredients Make the Difference
Sodium Ascorbyl Phosphate
Allantoin
Zinc PCA
Step 1 -
Apply
Step 2 -
Work In
Step 3 -
Let It Absorb



5-ALA (5-Aminolevulinic Acid) is a naturally occurring amino acid that supports cellular energy production.
Found in small amounts in foods like spinach and tomatoes, 5-ALA helps energize skin cells, making it a powerful ingredient for improving hydration, firmness, and glow.
5-ALA stimulates the mitochondria, known as the "powerhouses" of cells.
This boosts the production of ATP (cellular energy), which helps the skin to generate collagen and elastin, retain moisture, and regenerate more effectively - resulting in smoother, more radiant skin.
All our 5-ALA skincare products are dermatologically tested and suitable for daily use as part of your skincare routine.
In a clinical study, participants saw a measurable increase in skin hydration after just 4 weeks, along with a visible reduction in wrinkle depth and fine lines. Results may vary depending on skin type and consistency of use.
Yes. 5-ALA occurs naturally in the human body and in small amounts in foods like spinach, tomatoes, and potatoes.
In skincare, it is biotechnologically derived for purity, safety, and effectiveness.
Absolutely. 5-ALA pairs well with hydrating agents like hyaluronic acid, barrier-supporting ingredients like ceramides, and even brightening actives like Vitamin C. It’s a versatile and gentle base for many routines.
Yes. A Japanese double-blind clinical study confirmed that 5-ALA significantly increased skin moisture and reduced the depth of wrinkles after just four weeks of regular use.
Source: Naraoka et al., Health Journal, 2020.
Yes. The 5-ALA used in KIYOMI SKIN products is vegan, biotechnologically produced, and our skincare is never tested on animals.
5-ALA is ideal for anyone looking to:
- Deep hydration and moisture retention
- Visible reduction in fine lines and wrinkles
- Improved skin elasticity and firmness
- Supports cell renewal and repair
- Long-term radiance and skin resilience
Yes. 5-ALA is dermatologically tested and considered safe for all skin types, including sensitive skin.
At KIYOMI SKIN, we formulate with clean, biocompatible ingredients to ensure high tolerance and daily use.
5-ALA is perfect for those looking to:
- Improve skin hydration and glow
- Prevent or reduce signs of aging
- Boost collagen production naturally
- Strengthen and support skin from the inside out
- Build a science-based, minimalist skincare routine.
Kiyomi Community
@maribel_k_a
@antoninakuss
@belky_ferrey
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