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Kiseki Miracle Molecular Repair & Shine Ritual

$57.80

Mainichi Scalp Balancing Sake Rinse

$20.00

Bamboo comb with 'Nature Lab' branding on a white background

Mainichi Bamboo Treatment Comb

$10.00

Saisei Gray Reversal & Growth Renewal System

$79.00
Shipping calculated at checkout.
OptionBUNDLE

Return to you with the proven ritual of scalp care.

Embark on your journey of hair revival with the full collection that returns your hair’s natural fullness, thickness, strength, and color. Defend against oxidative stress and restore the vitality of your strands and scalp environment with our innovative daily scalp essence, refreshing shampoo, and soothing conditioner.

Hair feels thicker, fuller, and stronger with visibly restored natural pigment in just 3 months.

Formerly known as "Saisei Return To You Bundle"

Delivers as soon as Saturday, June 13
BENEFITS

SHAMPOO

  • Gently cleanses and helps soothe the scalp 
  • Helps strengthen hair at the root to reduce fall out
  • Hydrates and helps combat damage from UV exposure

CONDITIONER

  • Smoothes and moisturizes strands weightlessly
  • Helps strengthen hair to reduce fall out
  • Maintains strand elasticity and hydration
  • Soothes and nourishes to help combat damage from environmental stress

SAISEI ESSENCE

  • Lightweight enough for daily use, even on no-wash days
  • Absorbs quickly into the scalp
  • Provides a cooling, soothing effect
  • Can be used to help delay gray onset
PERFECT FOR

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

All hair textures.

SMELLS LIKE

Shampoo + Conditioner: A refreshing and elegant floral green fragrance inspired by Japanese iris. Evokes a rejuvenating breeze during a morning garden stroll in Japan. Centered around violet, with accents of celery, petitgrain, and davana, blended with a floral bouquet of mimosa, lily of the valley, and jasmine from France.

TOP NOTES
Celery, davana, petitgrain, violet leaves
MIDDLE NOTES
Muguet (lily of the valley), mimosa, French jasmine, cassis
BASE NOTES
Cinnamon, iris, cedarwood, musk

Essence: Formulated to be fragrance-free.

INGREDIENTS

SAISEI SHAMPOO:
Water, sodium lauroyl methylaminopropionate, cocamidopropyl betaine, lauramide dea, tea-cocoyl glutamate, lauramidopropyl betaine, sodium methyl cocoyl taurate, cocamide methyl mea, glutamic acid, picea mariana bark extract, butylene glycol, sodium pca, malus domestica fruit cell culture extract, epilobium angustifolium flower/leaf/stem extract, phyllostachys pubescens meristem cell lysate, rhododendron ferrugineum leaf cell culture extract, palmitoyl tetrapeptide-20, acetyl tetrapeptide-3, trifolium pratense (clover) flower extract, trifluoroacetyl tripeptide-2, glycerin, isomalt, polyquaternium-10, polyquaternium-50, argania spinosa kernel oil, sclerocarya birrea seed oil, simmondsia chinensis (jojoba) seed oil, sodium chloride, dextran, xanthan gum, argan oil polyglyceryl-6 esters, peg-160 sorbitan triisostearate, peg-7 glyceryl cocoate, lecithin, benzotriazolyl dodecyl p-cresol, dipropylene glycol, citric acid, sodium citrate, lactic acid, sodium metabisulfite, etidronic acid, pentasodium pentetate, phenoxyethanol, sodium benzoate, fragrance, ci 42090, ci 60730, caramel

SAISEI CONDITIONER:
Water, ethylhexyl palmitate, cetearyl alcohol, steartrimonium chloride, glutamic acid, butylene glycol, sodium pca, picea mariana bark extract, malus domestica fruit cell culture extract, epilobium angustifolium flower/leaf/stem extract, phyllostachys pubescens meristem cell lysate, rhododendron ferrugineum leaf cell culture extract, palmitoyl tetrapeptide-20, acetyl tetrapeptide-3, trifolium pratense (clover) flower extract, trifluoroacetyl tripeptide-2, glycerin, isomalt, argania spinosa kernel oil, sclerocarya birrea seed oil, simmondsia chinensis (jojoba) seed oil, hydrogenated castor oil isostearate, dextrin, hydroxyethylcellulose, xanthan gum, lecithin, dicocodimonium chloride, behenyl alcohol, benzotriazolyl dodecyl p-cresol, isopropyl alcohol, lactic acid, sodium metabisulfite, tetrasodium edta, etidronic acid, phenoxyethanol, fragrance, ci 60730 (ext. violet 2), ci 42090, ci 19140, caramel

SAISEI ESSENCE:
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

Complete your ritual:

Kiseki Molecular Repair Leave-In Hair Masque

$36.00

Wooden scalp massage tool with soft silicon spikes on a white background

Mainichi Scalp Massager

$18.00

Mainichi Scalp Balancing Sake Rinse

$20.00

Saisei Gray Reversal & Growth Renewal System

$79.00

•

Your destination for scalp and hair health

•

Proven results through J-Beauty routines

•

Derived from nature, backed by science

HOW TO

Return to you.

STEP ONE: Saisei Stress Defense Amino Acid Shampoo Lather into wet hair and rinse.

STEP TWO: Saisei Restoring Therapy Conditioner
Massage into wet hair, ensuring product is evenly applied. Leave in for 3 to 5 minutes before rinsing.

STEP THREE: Saisei Biomimetic Peptide Treatment Essence
After showering, once hair is towel-dried, part it and spray the essence directly onto your scalp. Use daily—even on no-wash days—by targeting key areas or misting evenly all over your scalp. Massage and leave it in. No rinse needed.

WHEN TO REAPPLY:
Reapply the Saisei Treatment Essence daily, even on no-wash days to return natural thickness, color, and vibrancy.

PRO TIP:
Consistency is key! For best results, apply Saisei Essence daily. Use AM or PM, whatever suits your routine best!

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.

Shampoo + Conditioner
11.5 FL OZ / 340 mL

Essence
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

SAISEI SHAMPOO:
Water, sodium lauroyl methylaminopropionate, cocamidopropyl betaine, lauramide dea, tea-cocoyl glutamate, lauramidopropyl betaine, sodium methyl cocoyl taurate, cocamide methyl mea, glutamic acid, picea mariana bark extract, butylene glycol, sodium pca, malus domestica fruit cell culture extract, epilobium angustifolium flower/leaf/stem extract, phyllostachys pubescens meristem cell lysate, rhododendron ferrugineum leaf cell culture extract, palmitoyl tetrapeptide-20, acetyl tetrapeptide-3, trifolium pratense (clover) flower extract, trifluoroacetyl tripeptide-2, glycerin, isomalt, polyquaternium-10, polyquaternium-50, argania spinosa kernel oil, sclerocarya birrea seed oil, simmondsia chinensis (jojoba) seed oil, sodium chloride, dextran, xanthan gum, argan oil polyglyceryl-6 esters, peg-160 sorbitan triisostearate, peg-7 glyceryl cocoate, lecithin, benzotriazolyl dodecyl p-cresol, dipropylene glycol, citric acid, sodium citrate, lactic acid, sodium metabisulfite, etidronic acid, pentasodium pentetate, phenoxyethanol, sodium benzoate, fragrance, ci 42090, ci 60730, caramel

SAISEI CONDITIONER:
Water, ethylhexyl palmitate, cetearyl alcohol, steartrimonium chloride, glutamic acid, butylene glycol, sodium pca, picea mariana bark extract, malus domestica fruit cell culture extract, epilobium angustifolium flower/leaf/stem extract, phyllostachys pubescens meristem cell lysate, rhododendron ferrugineum leaf cell culture extract, palmitoyl tetrapeptide-20, acetyl tetrapeptide-3, trifolium pratense (clover) flower extract, trifluoroacetyl tripeptide-2, glycerin, isomalt, argania spinosa kernel oil, sclerocarya birrea seed oil, simmondsia chinensis (jojoba) seed oil, hydrogenated castor oil isostearate, dextrin, hydroxyethylcellulose, xanthan gum, lecithin, dicocodimonium chloride, behenyl alcohol, benzotriazolyl dodecyl p-cresol, isopropyl alcohol, lactic acid, sodium metabisulfite, tetrasodium edta, etidronic acid, phenoxyethanol, fragrance, ci 60730 (ext. violet 2), ci 42090, ci 19140, caramel

SAISEI ESSENCE:
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

SHAMPOO + CONDITIONER

BLACK SPRUCE BARK EXTRACT
A sustainable upcycled extract that helps repair damage and protect the scalp and hair color from oxidation and environmental stressors.

APPLE EXTRACT
Soothes and hydrates the scalp with supercharged antioxidants. Helps preserve natural color and thickness while reducing shedding.


SAISEI TREATMENT ESSENCE

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

SAISEI ESSENCE AWARDS

  • New Beauty Awards: Best Anti-Gray Scalp Treatment, 2025
  • 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

Overall rating: 4.5675673 / 5 from 37 reviews.

AI Generated Review Summary

Customers appreciate the Saisei Return To You Bundle for making hair feel softer, silkier, and healthier. They also rave about the wonderful, fresh scent and the product's ability to restore natural fullness, thickness, strength, and color to hair.

Summary topics

  • Hair Feel: 50%
  • Scent Satisfaction: 36%

Review topics: ["hair","feeling","look","scent","scalp","shampoo","conditioner","bundle"].

Review highlights

  • "Smells good, suds up nicely, hair feels clean and scalp feels nice." — Liane N.
  • "My hair feels great, looks bright and smells so good." — Cambria O.
  • "This product instantly made my scalp feel less dry and my hair is looking really healthy!" — Misa B.

Reviews

Waste of money

"I bought the Saisei Gray Reversal & Growth Renewal System. I was hoping it would help my hair grow or gray hair reversal. It did not appear to do either. It was a waste of money. I prefer if it could at least bring back color to the hair if not regrow hair. Sadly, it did not produce any results."

— Raymond (1/5)

"the packaging is beautiful, haven’t tried it yet since i have a lot of other products to use first but there is no doubt it will work as well as the other products i have tried from here"

— Celeste (5/5)

Perfect hair care

"A little goes a long way"

— Lyndsay W. (5/5)

Quality brand

"Clean scalp, hair looks healthy and smells great"

— Sana A. (5/5)

"Love my hair now thanks to this product."

— Azucena (5/5)

I’ve used the shampoo and

"I’ve used the shampoo and conditioner a few times now and feel I am ready for a review. First off-I like the subtle smell and cleansing properties of the shampoo. The conditioner also works in giving me smooth hair. However, I’m noticing more than normal hair fall and that’s a dampener for me. The hair serum is ok so far-there hasn’t been any noticeable difference to my hair."

— Neha K. (3/5)

Amazing product

"Extremely impressed with this product that makes my hair look amazing. The scent is mild and not too overwhelming. I would give it five stars overall."

— Michele R. (3/5)

Smells wonderful

"I love the smell, it’s the best. I wish the conditioner was a little more moisturizing."

— Debbie C. (4/5)

I noticed my hair is

"I noticed my hair is fuller already and I really enjoy the neutral fragrance."

— Emili M. (5/5)

Love the sleek packaging and

"Love the sleek packaging and I. Have already started noticing a different after only two weeks of use"

— stephanie b. (5/5)

Q&A
Why J-Beauty Hair Rituals Deserve a Spot in Your Routine

LEARN MORE ON OUR BLOG:

Why J-Beauty Hair Rituals Deserve a Spot in Your Routine

J-Beauty is more than hair care—it’s a mindful ritual. With NatureLab.TOKYO, everyday routines become moments of balance, beauty, and lasting results.

Read more