Free Shipping On Qualifying Orders $30+

Complementary Mainichi Scalp Massager with $50+ ($24 Value)

Join N.LAB INSIDERS, get a welcome gift Join Now

Checkout for a free scalp massager with orders $50+

TRY THESE TOO

Cart 0

Congratulations! Your order qualifies for free shipping You are £30 away from free shipping.
Sorry, looks like we don't have enough of this product.

Subtotal Free
View cart
Shipping, taxes, and discount codes are calculated at checkout

Saisei Biomimetic Peptide Treatment Essence

Regular price £35.00
Shipping calculated at checkout.
Option30-DAY SUPPLY

Renewal at the root.
A daily, leave-on scalp essence designed to support hair density and visibly reduce grays while restoring a more youthful hair appearance over time. This refreshing, fragrance-free serum reinforces hair at the root and helps address visible signs of hair aging—without residue.

Delivers as soon as Thursday, February 19
BENEFITS
  • Supports stronger, fuller-looking hair
  • Reinforces hair at the root
  • Visibly reduces the look of grays 
  • Lightweight, non-greasy, daily use
PERFECT FOR

Hair in the beginning to moderate stages of the graying or thinning processes.

All hair textures.

SMELLS LIKE

Formulated to be fragrance-free.

INGREDIENTS

Water, alcohol, butylene glycol, glycerin, malus domestica fruit cell culture extract, epilobium angustifolium flower/leaf/stem extract, phyllostachys pubescens meristem cell lysate, acetyl tetrapeptide-3, trifolium pratense (clover) flower extract, palmitoyl tetrapeptide-20, trifluoroacetyl tripeptide-2, glutamic acid, sodium pca, picea mariana bark extract, eisenia arborea extract, porphyra yezoensis extract, rhododendron ferrugineum leaf cell culture extract, isomalt, argania spinosa kernel oil, sclerocarya birrea seed oil, simmondsia chinensis (jojoba) seed oil, dextran, menthol, acrylates/c10-30 alkyl acrylate crosspolymer, xanthan gum, polysorbate 20, lecithin, peg-60 hydrogenated castor oil, sodium hydroxide, lactic acid, sodium metabisulfite, tetrasodium etidronate, etidronic acid, phenoxyethanol

Free U.S.* Shipping $30+

Free 30 Days Returns

Always Cruelty Free

We Give 1% Back For Every Sale

Saisei Biomimetic Peptide Treatment Essence

£35.00

Your destination for scalp and hair health

Proven results through J-Beauty routines

Derived from nature, backed by science

HOW TO

After showering and gently towel-drying, part hair and mist directly onto the scalp. Massage gently. Do not rinse.

On no-wash days, apply to dry scalp in the same way.
Use once daily for best results.

Pro Tip: Saisei is designed as a 3-step renewal system—Shampoo, Conditioner, and Treatment Essence. For optimal density support and visible renewal, use the full Saisei Anti-Gray Line consistently.

Tell Me More

What Is It?

Return to you with our daily scalp essence that combats the root causes of visible signs of aging in our hair, such as graying and thinning. Our team spent 12 years developing the perfect blend of biomimetic peptides and botanicals to revitalize hair from the root. Paired with red clover flower extract, these key peptides combine forces to protect follicles and stimulate melanin production, supporting thicker and fuller strands while working to restore hair’s natural pigment and defend against oxidation. The lightweight formula also soothes and improves scalp health to help strengthen hair and create an optimal environment for healthier growth. With consistent use, Saisei’s results are clinically proven to be seen in as little as 3 months.

What Does It Do?

Stress and time are your hair’s biggest enemies. Saisei combats both.

Thicker, Fuller Looking Hair

Our biomimetic peptides help anchor the hair fiber into the scalp which can strengthen strands and target the causes of hair loss. When used with red clover extract, it revitalizes hair follicles, can improve blood circulation, and help nourish and oxygenate the roots, which can increase the thickness, volume and strength of hair. 78%* agreed that the Saisei Collection helps visibly improve hair density and that hair looks and feels thicker after 90 days of use.

Restores Hair’s Natural Pigment

The natural color of our hair comes from melanin in the hair bulb, where new hair cells are formed. As we encounter age or stress, the melanin in our hair gets depleted, and the pigment in our hair starts to fade. It’s possible to slow down and counter this process by stimulating the production of melanin as well as reducing the effects of oxidative stress that affect melanin accumulation. The specific sequences in our curated biomimetic peptides promote the migration and accumulation of melanin in the bulb, which helps restore pigment at the root as hair grows. Pairing the peptides with nutrient-rich red clover and rosebay extracts has a synergistic effect that helps enhance melanin production, accumulation, and protection while promoting overall scalp health and fuller-feeling, revitalized strands. Supercharged antioxidants from apple extract also help with maintaining hair’s natural pigmentation and thickness.

Protects From Oxidative Stress

Oxidative stress occurs when reactive oxygen species, or free radicals, outnumber the body’s natural defense mechanisms and progressively cause cell damage. This imbalance grows larger with age, as the body’s production of free radicals increases and its defense mechanisms decrease. The damage of cellular structures, including lipids and proteins, can be pivotal in visible signs of hair aging such as graying, thinning, changes in texture, and slower growth. Ingredients rich in antioxidants and with strengthening properties, including bamboo extract, black spruce bark extract, and alpine rose extract, can help protect hair from endogenous free radical damage and environmental stressors.

Scalp Health

Scalp health is essential for healthy hair, and an imbalanced scalp that isn’t well cared for often leads to other issues like irritation, dryness, and excessive oiliness. Keeping the scalp hydrated and maintaining the skin barrier are key ways to aid protecting the scalp from irritation and support an optimal environment for healthier hair growth. Rosebay extract, a plant that is able to regrow and thrive even in areas affected by wildfires, helps soothe the scalp along with apple extract. Anti-inflammatory and vitamin-rich seaweed extract and algae extract help add and retain moisture.


1.7 FL OZ / 50 mL
*Product packaging may vary slightly from displayed images.
Note: This product is not eligible for purchase in Maine.

Full Ingredient List

Water, alcohol, butylene glycol, glycerin, malus domestica fruit cell culture extract, epilobium angustifolium flower/leaf/stem extract, phyllostachys pubescens meristem cell lysate, acetyl tetrapeptide-3, trifolium pratense (clover) flower extract, palmitoyl tetrapeptide-20, trifluoroacetyl tripeptide-2, glutamic acid, sodium pca, picea mariana bark extract, eisenia arborea extract, porphyra yezoensis extract, rhododendron ferrugineum leaf cell culture extract, isomalt, argania spinosa kernel oil, sclerocarya birrea seed oil, simmondsia chinensis (jojoba) seed oil, dextran, menthol, acrylates/c10-30 alkyl acrylate crosspolymer, xanthan gum, polysorbate 20, lecithin, peg-60 hydrogenated castor oil, sodium hydroxide, lactic acid, sodium metabisulfite, tetrasodium etidronate, etidronic acid, phenoxyethanol

Inside The Formula

Key Ingredients

BIOMIMETIC PEPTIDES
Supports melanin production to help restore natural hair color while also promoting greater strength, thickness, and fullness for strands.

ROSEBAY EXTRACT
(Defenscalp) Helps soothe the scalp for a healthier scalp microbiome. Extracted from rosebay willow herb, which regrows quickly even in areas affected by forest fires.

RED CLOVER EXTRACT
(5% Capixyl) A rich source of nutrients and isoflavones that can support fuller hair. When paired with certain biomimetic peptides, it can help revitalize hair follicles for stronger, thicker feeling hair.


Formulated Without

Parabens, Sulfates, Phthalates, Over 1,300 ingredients that are banned in the EU, Animal Testing, Silicone, Animal Derived Ingredients


What is J-Beauty?

Efficacious, minimalistic treatments designed meticulously with trusted Japanese heritage, ingredients and technological innovation.

Developed with a distinctive Japanese approach: relentless pursuit of excellence in refining the optimal combination of time-tested tradition and science's latest discoveries.

NatureLab.TOKYO is Japanese beauty.

Awards + Press

AWARD

  • People Beauty Awards: Best Scalp Treatment, 2024
  • Women's Health Skincare Awards: Best Scalp Serum, 2024

PRESS

Well+Good, 2024

People, 2024

Women's Health, 2024

Marie Claire, 2024

US Magazine, 2024

NewBeauty, 2024

Forbes, 2024

Byrdie, 2024

Shipping + Returns

Contiguous U.S. Shipping

Free shipping with orders $60+. We don't currently ship outside of the United States. Stay tuned for more updates.

Order Tracking

Tracking numbers are automatically sent as soon as your order is packed. Please check your junk folder if you do not receive one 72 hours after placing your order.

Get In Touch

If you have any questions about your order please email us at help@naturelab.com. Our customer service is available Monday through Friday from 8am until 12pm pst.

Customer Reviews