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Plumping Energizing

Step 2: Serum

Moisturizing Serum

5-ALA & Rice Extract - support skin renewal and boost natural radiance

Collagen & Hyaluronic Acid - deliver intense hydration and visibly plump the skin

Baobab, Argan, and Jojoba oils - deeply nourish and strengthen the skin’s natural protective barrier

Loved by our customers

Leaves skin feeling fresher and visibly plumped.

Sale price$44.90 USDIn stock

Tax excluded.

Who is this product ideal for?

Perfect for anyone looking to boost their skin with hydration, freshness, and radiance - ideal for tired or tight-feeling skin.

Description

Moisturizing Face Serum – For firm, smooth skin with visible lifting effects


Does your skin look dull, tired, or show dryness? Your skin needs hydration. The perfect solution is our Moisturizing Serum from the FUJI series. Our serum combines the regenerating properties of hydrolyzed collagen, 5-ALA, and hyaluronic acid, visibly tightening the skin and smoothing its appearance.* The specially developed, non-greasy texture provides fresh, plump skin that radiant skin all day long.

Why you should choose the Moisturizing Serum:


  • Firming effect: The serum promotes collagen production, supporting the skin’s natural firmness and elasticity, leading to firmer skin and reducing the first signs of aging.* 
  • Regenerating care: The moisturizing power of 5-ALA, hydrolyzed collagen, and hyaluronic acid intensely regenerates the skin, making it look instantly fresher and smoother.
  • Protection and care: Natural plant oils and antioxidants protect the skin from external stress factors, keeping it soft and supple.
  • For a youthful appearance: Regular use visibly smooths the skin, restoring freshness and vitality.*


Experience visible skin improvement with our Moisturizing Serum, which deeply hydrates, refines texture, and gives your skin a firmer, plumper appearance.

*Measured results from an external, independent instrumental study, efficacy tests conducted March/April 2023, with 10 participants over a 28-day period of daily use.
Application

Use the KIYOMI SKIN Moisturizing Serum daily, in the morning and in the evening, as needed. Apply 2-3 drops of the serum to your face using the pipette, and gently massage it into the skin with upward motions, from the center of the face outwards. Allow the serum to fully absorb. Follow with a moisturizer. The serum can also be used on your lips.

Ingredients

Water, Glycerin, Butylene Glycol, Pentylene Glycol, Diglycerin, Cellulose Gum, Lactobacillus/Rice Ferment Filtrate, Aminolevulinic Acid Phosphate, Sodium Citrate, Inulin, Xanthan Gum, Citric Acid, Diammonium Ferric Pentetate, Pelargonium Graveolens Oil, Cellulose, Fructose, Glucose, Dipropylene Glycol, Adansonia Digitata Seed Oil, Argania Spinosa Kernel Oil, Camellia Japonica Seed Oil, Hydrolyzed Collagen, Hydrolyzed Hyaluronic Acid, Nigella Sativa Seed Oil, Simmondsia Chinensis (Jojoba) Seed Oil, Plukenetia Volubilis Seed Oil*, Soluble Collagen
* Certified organic ingredient

Füllmenge: 1 fl.oz. / 30ml

Sale price$44.90 USD

Packaged in Italian Glass

No Parabens or Silicones

Cruelty-free

No Perfume

GMO-free

No Microplastics

Where Science Meets Results

How 5-ALA Helps Your Skin Reveal Its Best Self

1. Activate Cellular Energy
As we age, our cells produce less energy - the skin can appear dull, tired, and less radiant. 5-ALA helps re-energize these natural processes, giving your skin newfound vitality and a visibly brighter look.

2. Support Skin Regeneration

With renewed energy, your skin can better support its natural repair and renewal cycles. Your complexion appears more refreshed, balanced, and restored.

3. Strengthen Skin Structure
5-ALA supports the formation of collagen and elastin, helping your skin maintain firmness - the foundation of smooth, supple skin texture.

4. Preserve Skin Hydration
Over time, the skin barrier becomes more delicate. By supporting healthy cellular metabolism, 5-ALA helps strengthen the barrier so your skin can retain moisture more effectively. The result: a nourished, protected, comfortably hydrated skin feel.

The Results Our Community Loves

Deep Hydration

Dry, tight skin even though you’re using rich moisturizers?

Moisture alone isn’t always enough - your skin needs support to hold on to it. Clinical studies show that 5-ALA sustainably improves the skin’s moisture levels.

The result: skin that looks plump, fresh, and deeply hydrated.

Refined Skin Texture

Uneven texture or enlarged pores?

This is often linked to a slowed cellular renewal process.

5-ALA supports the natural renewal cycle and helps rebalance overall skin texture - for visibly refined pores, smoother contours, and a more even-looking complexion.

Preventive Skincare

Looking for skincare that works early and supports your skin in the long run?

We believe in preventive skincare powered by 5-ALA.

5-ALA supports cellular activity and keeps your skin’s natural renewal processes moving - for smoother, clearer-looking skin today and the confidence of knowing your complexion will stay radiant tomorrow.

Skin in Balance

Does your skin tend to flush easily or look stressed?

A slowed-down renewal process is often the reason.

Our active ingredient 5-ALA supports natural regeneration and reinforces the skin’s protective functions. As a result, redness fades, irritation calms, and your complexion looks noticeably more even.

Natural Glow Booster

Dull, tired-looking skin - even with a dedicated routine?

In many cases, the skin is simply lacking energy. Our active ingredient 5-ALA supports mitochondrial processes essential for cellular energy production - helping your skin regain its radiance quickly and naturally.

Ingredients

These Ingredients Make the Difference

Hydrolyzed Collagen

Collagen broken down into smaller peptides for better absorption. Helps strengthen skin structure, improve moisture retention, and enhance suppleness.

Ideal for: firmness, hydration, supple skin

Hydrolyzed Hyaluronic Acid

A smaller-molecule form of hyaluronic acid that penetrates deeper into the skin - delivering intensive, long-lasting hydration and helping maintain moisture levels.

Ideal for: hydration boost, smoother skin

Baobab Oil

Extracted from the seeds of Africa’s “Tree of Life.” Rich in vitamins and omega fatty acids, it deeply nourishes, preserves moisture, and supports skin elasticity.

Ideal for: nourishment, elasticity, protection against dryness

Step 1 -
Apply

Morning and evening, dispense 2–3 drops with the dropper onto clean skin.

Step 2 -
Work In

Gently smooth it in with your fingertips, moving from the center of the face outward - perfect for the lips as well.

Step 3 -
Let It Absorb

Allow it to sink in completely before applying your moisturizer.

FAQs

More questions? We're here to help!

Contact Us

What is 5-ALA in skincare?

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.

How does 5-ALA work on the skin?

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.

Is 5-ALA safe for daily use?

All our 5-ALA skincare products are dermatologically tested and suitable for daily use as part of your skincare routine.

When can I expect to see visible results with 5-ALA skincare?

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.

Is 5-ALA a natural skincare ingredient?

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.

Can I combine 5-ALA with other skincare ingredients?

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.

Is there scientific research supporting the effectiveness of 5-ALA in skincare?

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.

Is 5-ALA vegan and cruelty-free?

Yes. The 5-ALA used in KIYOMI SKIN products is vegan, biotechnologically produced, and our skincare is never tested on animals.

What are the skincare benefits of 5-ALA?

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

Is 5-ALA safe for all skin types?

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.

Who should use 5-ALA skincare products?

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.
Your Feedback

Kiyomi Community

@made.bylais

Hydrated, glowing skin starts here!

@anechka_massage

Perfect under makeup and an integral part of my morning routine.

@merelygrace

my new favorite hydrating serum. not only does a couple of drops patted into your skin feel nourishing and add bounce to your dermis, bit it definitely adds a glow

Reviews