Skip to product information
1 of 3

ROAliv

ROAliv Boost Lock Serum, 200ml

ROAliv Boost Lock Serum, 200ml

@cosme rating: /7.0

Honey water serum to boost firmness and elasticity

✓ 100% authentic

✓ Ships from Japan in 3-5 days

✓ Duties prepaid for US orders

✓ Tracked delivery via Japan Post

Regular price $52.00 USD
Regular price Sale price $52.00 USD
Sale Sold out
Shipping calculated at checkout.
Quantity
View full details

What it is

Vibrant scents that evoke a lively and vibrant energy. A delightful fragrance that combines the scents of flowers, fruits, greens, and trees with honey. Give special care to the ends of your hair, which have endured a long time since they were born and are prone to damage, dryness, and frizz. This water-based hair serum is used between shampoo and conditioner to intensively replenish beauty ingredients*1. In addition to honey*2 and 13 types of amino acids*3, it contains amaranth extract*4 to give hair firmness and body. It penetrates deeply into the ends of the hair, and lipid nanocapsules*5 containing a high concentration of three types of human-type ceramides lock in moisture. It also helps to improve the absorption of the conditioner used afterward. Hair serum to be used between shampoo and conditioner. A rich, thick beauty serum. When applied mainly to dry ends of the hair, it penetrates deeply as if being absorbed into the inside of the hair, and also helps to improve the absorption of the conditioner used afterward. It can also be used in combination with your existing shampoo and conditioner. Lipid nanocapsules*5 fortified with three types of human-type ceramides repair the inside and outside of the hair. These lipid nanocapsules*5, which focus on hair-binding lipids, contain 18-MEA and five types of human-type ceramides. Three of these human-type ceramides are included in high concentrations to enhance moisture. They thoroughly fill in even the thinnest ends of the hair, locking in moisture and shine. Honey*1 and 13 types of amino acids*4 penetrate the hair. Honey contains carbohydrates that hold moisture and a balanced amount of vitamins and minerals necessary for hair and scalp. Amino acids are a type of protein that makes up hair. They penetrate into the inside of the hair while washing, keeping moisture in. Amaranth extract*4 is included to give firmness and body to the ends of the hair. It contains vitamins, amino acids, squalene, etc., giving moisture, firmness, and body to dry ends of the hair. *1 Royal jelly extract, marjoram leaf extract (skin conditioning ingredients), golden silk extract, hydrolyzed hydrogenated starch, water, watercress leaf/stem extract (repairing ingredients) *2 Honey (moisturizing ingredient) *3 PCA, PCA-Na, aspartic acid, alanine, arginine, isoleucine, glycine, serine, threonine, valine, phenylalanine, proline, histidine (moisturizing ingredients) *4 Acer palmatum seed extract (repairing ingredient) *5 Water, PG, distearyldimonium chloride, quaternium-33, cholesterol, ceramide NG, ceramide AG, ceramide NP, ceramide AP, ceramide EOP, BG (moisturizing ingredients)

Ingredients

Water, Cyclopentasiloxane, Glycerin, Stearyl Alcohol, Cetanol, Mineral Oil, Behentrimonium Chloride, (Bis-Isobutyl PEG/PPG-10/7/Dimethicone) Copolymer, PCA, PCA-Na, Almond Oil, Aspartic Acid, Alanine, Arginine, Isoleucine, Watercress Leaf/Stem Extract, Glycine, Ceramide AG, Ceramide AP, Ceramide EOP, Ceramide NG, Ceramide NP, Serine, Tocopherol, Threonine, Honey, Russula Leaf Extract, Valine, Phenyl Alanine, grape fruit cell extract, proline, marjoram leaf extract, royal jelly extract, hydrolyzed silk, hydrolyzed hydrogenated starch, sodium lactate, BG, aminopropyl dimethicone, amodimethicone, isopropanol, isomalt, ethanol, citric acid, quaternium-33, cholesterol, dicocodimonium chloride, dimethicone, ceteth-20, histidine, lecithin, petrolatum, denatured alcohol, PG, distearyldimonium chloride, steartrimonium chloride, phenoxyethanol, fragrance

How to use

After shampooing, lightly squeeze out excess water, and apply a coin-sized amount (about the size of a 500 yen coin) mainly to the ends of your hair (for shoulder-length hair). Leave it on for 20-30 seconds, then apply conditioner on top and rinse thoroughly.

We ship internationally from Japan!

Frequently Asked Questions

Is this authentic?

Yes. We only buy from official retailers and directly from the brands here in Japan. Never resellers, never grey market stock.

We are beauty lovers too, so we know the worry, especially with something you are putting on your face. Authenticity is 100% guaranteed by us.

What are your shipping rates?

On orders under US$75, shipping is a flat US$20 to the United States and US$10 to all other countries.

Orders of US$75 or more ship free, applied automatically at checkout. Your exact shipping cost is shown before you pay.

How long does delivery take?

These estimates are for International Airmail (Tracked) and include 3 to 5 business days of processing in Japan.

  • United States: 12 to 15 business days
  • Canada, United Kingdom, France, Germany: 9 to 12 business days
  • Australia, New Zealand, Denmark, Finland, India, Indonesia, Italy, Netherlands, Spain, Sweden, Switzerland: 10 to 13 business days
  • China, Hong Kong, Malaysia, Singapore, South Korea, Taiwan, Thailand, Vietnam: 8 to 10 business days
  • Rest of the world: 11 to 18 business days

Actual delivery can be affected by customs clearance, seasonal congestion, or carrier delays in the destination country, all of which are outside our control.

Do you offer express shipping?

Yes. As of 22 July 2026, we offer International Express Mail through Japan Post. The cost is based on order weight and is calculated automatically at checkout.

Will I pay customs or import fees?

US orders: No. As of July 1, 2026, all US orders ship DDP (duties delivered prepaid), meaning we prepay all import duties on our end. Nothing is due at your door.

Orders outside the US: Possibly. Duties and import taxes are set by your local customs authority and are not collected at checkout, so any charges on delivery are your responsibility.

We're working on rolling out prepaid duties for more countries soon.