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What is Dioscorea Japonica Root Extract?

Role not confirmed

We haven't written up what this ingredient does yet. The products below feature it as a key ingredient.

Which products feature it?

4 of the 2320 products we've checked feature this as a key ingredient. Products that disclose a concentration or list it near the top of the ingredient list come first.

Showing 1 to 4.

  • Product photo of Yam Root Vegan Milk Cleanser

    Isntree

    Yam Root Vegan Milk Cleanser

    It's made for better hydration.

    Key Dioscorea Japonica Root Extract (#15 on the ingredient list), Helianthus Annuus (Sunflower) Seed Oil 30%, Arachidyl Glucoside

    Olive Young USOfficial (Korean)
    32 claims, summarized
    Only partly backed:
    better hydration · firmer skin · better barrier support
    Tests passed:
    skin irritation
    See each claim

    Claims, checked

    • Seaweed extract, lotus root extract, kelp extract, okra fruit extractbacked by evidence
    • Skin-friendly plant oil sunflower seed oil 30%backed by evidence
    • Plant-derived surfactants coco-glucoside, arachidyl glucosidebacked by evidence
    • Yam cleansing milk that protects the sensitive skin barrierplausible, not tested
    • Clean and moist with cleansing power added to a gentle milk #YamBarrierMilkplausible, not tested
    • Chewy milk texture that softly adheres / Containing Andong yam x phyto mucin, the chewy milk texture softly adheres to the skinplausible, not tested
    • Clean and moist without needing double cleansingpartly backed
    • Andong yam rich in phyto mucin forms a strong moisture barrier, keeping skin moist even after cleansingpartly backed
    • pH 5.5(±1) Mild cleansing | Rich & Creamy texture | Protects skin barrierpartly backed
    • Chewy milk texture with Andong yam and plant mucinpartly backed
    • Effective cleansing power with just one milk, no double cleansing neededpartly backed
    • A moisture barrier that fills skin moist as if applying skincare while cleansingpartly backed
    • A low-irritation, mildly acidic formula that can be used comfortably even on the eye areapartly backed
    • Clean cleansing power with just one yam milk, no double cleansing neededpartly backed
    • Ultrafine dust cleansing power +95%partly backed
    • Inorganic sunscreen cleansing power +93%partly backed
    • Human application test completed for cleansing effect of sunscreen (inorganic) after one use (Inc.) Human Skin Clinical Trial Center | 2026.02.09~2026.02.10 | 23 adult women | individual differences may existpartly backed
    • Human application test completed for ultrafine dust cleansing effect after one use (Inc.) Corederm Skin Science Institute | 2021.12.20~2021.12.21 | 21 adult women | individual differences may existpartly backed
    • Comfortable cleansing for skin with naturally derived cleansing ingredients / Gentle yet powerful cleansing with high-content skin-friendly plant oils and plant-derived surfactants!partly backed
    • A skincare cleanser that stays moist with no chance to dry out after cleansingpartly backed
    • With plant milk complex, a moisture barrier that fills skin moistly as if applying skincare while cleansingpartly backed
    • After 4 weeks of use, skin moisture level improvement 29.29%partly backed
    • After 4 weeks of use, skin barrier improvement 14.77%partly backed
    • Human application test completed for improvement in skin moisture level and transepidermal water loss (TEWL) after 4 weeks of use (Inc.) Maridiem Skin Science Institute | 2026.04.13~2026.05.15 | 20 adult women | individual differences may existpartly backed
    • Mildly acidic formula with pH 5.0 (±0.5), close to healthy skin pH, providing a moist finish without tightnesspartly backed
    • Eye irritation test completed / Sensitive skin irritation test completed (Inc.) Human Skin Clinical Trial Center 2026.02.03~2026.02.05 | 33 adult men and women / Primary skin irritation test completed (Inc.) Corederm Skin Science Institute 2021.12.21~2021.12.24 | 33 adult womenpartly backed
    • VEGAN FORMULA This product has been certified vegan with no animal-derived ingredients used or added.partly backed
    • With yam's moisturizing essence, a comfortable skin barrier with each cleanseoverstated
    • Phyto cleansing that protects the moisture barrier with K-mucin Andong yamno supporting source found
    • 'Isntree Yam Vegan Milk Cleanser' eye irritation alternative evaluation test (HET-CAM Test) completed (Inc.) Maridiem Skin Science Institute | 2021.12.27~2021.12.31 | 30 adult women | individual differences may existno supporting source found
    • A low-irritation mildly acidic milk that is comfortable even on delicate eye areano supporting source found
    • EASY ENTRY to ACTIVE GREEN A high-performance green beauty brand focused on researching skin-safe ingredients.nothing specific to check
  • Product photo of 자작나무 수분 선쿠션 [SPF50+/PA++++]

    ROUND LAB

    자작나무 수분 선쿠션 [SPF50+/PA++++] (Korean)This brand publishes no English name for this product. The name above is as printed in Korean.

    It's registered in Korea as a functional cosmetic for UV protection.

    Key Dioscorea Japonica Root Extract (#19 on the ingredient list), Betula Platyphylla Japonica Juice, Glyceryl Glucoside

    Official (Korean)
    21 claims, summarized
    You can expect:
    sun protection
    Only partly backed:
    better hydration (amount unknown)
    Free of:
    the ingredients it lists
    Tests passed:
    skin irritation
    See each claim

    Claims, checked

    • UV-blocking functional cosmeticbacked by evidence
    • *Soothing Cooler patented ingredient: Aloe Vera Leaf, Kelp, Violet, Ulmus Davidiana Root, Dioscorea Japonica Root Extractbacked by evidence
    • Powerful sun care clinically confirmedbacked by evidence
    • UVB protection index SPF 50+backed by evidence
    • UVA protection index PA++++backed by evidence
    • Easily block with a moisturizing hydrating sun cushion!plausible, not tested
    • With a moist hydration feel, it adheres softly and thinly to the skin, helping create a natural and radiant skin expression.plausible, not tested
    • Inje birch sap, grown while embracing the refreshing energy of a cool breeze, is rich in amino acids and minerals, supplies moisture to dry skin, and keeps it moist.partly backed
    • The patented Soothing Cooler ingredient gives moist hydration and a refreshing sensation, providing a moisture cooling effect that lowers the heat of heated skin.partly backed
    • Sun protection is basic, with natural tone-up effect toopartly backed
    • Non-nano inorganic sunscreen with no absorption concernspartly backed
    • As an inorganic UV blocker composed of non-nano particles that reflect UV rays at the skin surface, it is not absorbed into the skin, so you can use it with confidence.partly backed
    • By excluding *UV-blocking ingredients that harm marine ecosystems and coral reefs, we are joining the movement to save the earth.partly backed
    • German derma test completedpartly backed
    • Skin irritation test completedpartly backed
    • With the refreshing moisture of Inje birch, moist all day longoverstated
    • With glyceryl glucoside that opens the moisture path, moisture more deeplyoverstated
    • Glyceryl glucoside, the key ingredient of the resurrection plant, activates *aquaporin, the water channel in the skin, helping with powerful moisture supply.overstated
    • Completed domestic and overseas skin irritation tests, gently without irritationoverstated
    • Instant moisture cooling for irritated skinno supporting source found
    • Round Lab makes cosmetics that even sensitive skin can use with confidence.nothing specific to check
  • Product photo of vegan relief sun cushion

    athé

    vegan relief sun cushion

    It's made for calmer skin and better hydration.

    Key Dioscorea Japonica Root Extract (#33 on the ingredient list), Aloe Barbadensis Leaf Extract, Laminaria Jaonica Extract

    Official (Korean)
    21 claims, summarized
    Only partly backed:
    less visible dark spots · softer-looking fine lines · sun protection · calmer skin
    See each claim

    Claims, checked

    • Atte Vegan Relief Sun Cushion Inorganic Sunscreen Sun Cushionbacked by evidence
    • Dry-outside-moist-inside texture with no stickiness & no transferplausible, not tested
    • Wrinkle improvement + brightening + UV protection triple functional cosmeticpartly backed
    • From face to body, the -5ºC Air Cooler giant sun cushion that tackles heat sensation/soothing at the same timepartly backed
    • -5ºC Air Cooler sun cushion that calms skin heat sensationpartly backed
    • Contains 60% moisture essence for all-day moisturepartly backed
    • With a giant-size cushion, quickly block UV from face to bodypartly backed
    • -5ºC cooling effect that immediately lowers skin temperaturepartly backed
    • Even prevents the effect of temperature rise in the applied areapartly backed
    • A moisturizing sun cushion containing 60% moisture essencepartly backed
    • Contains patented ingredient Soothing Coolerpartly backed
    • Giant size for easy use from face to bodypartly backed
    • Hydro cooling gel rapidly freezes skin temperature by -5ºCoverstated
    • The sun cushion with numerous records & high consumer satisfaction, upgraded one level furtherno supporting source found
    • An inorganic sunscreen formula for the whole family that even sensitive skin can use with confidenceno supporting source found
    • The patented ingredient Soothing Cooler, composed of kelp, aloe, Japanese yam and more, is gelled to instantly bring skin temperature down & even block heatno supporting source found
    • Jeju organic aloeno supporting source found
    • Stickiness / residue / stuffiness ZERO texture, a fresh and moisturizing formula with no worry of transferring onto clothesno supporting source found
    • With the big size, the face is done in the first touch! Light and easy to use not only on the face but on the whole bodyno supporting source found
    • No discontinuation! A must-have repurchase item you stock up N units at a timenothing specific to check
    • Sun care for a different class of skin expressionnothing specific to check
  • Product photo of Water Splash Cooling Sun Stick

    CURE

    Water Splash Cooling Sun Stick

    It's made for calmer skin and less visible pores.

    Key Dioscorea Japonica Root Extract (#37 on the ingredient list), Aloe Barbadensis Leaf Juice, Aloe Barbadensis Leaf Extract

    Official (Korean)
    39 claims, summarized
    Only partly backed:
    calmer skin · less visible pores · better hydration
    Don't count on:
    firmer skin · a smoother skin texture
    Free of:
    the ingredients it lists
    Tests passed:
    hypoallergenic · skin irritation
    See each claim

    Claims, checked

    • UV protection is a given! COOL-DOWN aloe sun stick that soothes skin heatpartly backed
    • Cooling effect: average 7.86°C decreasepartly backed
    • Improvement & soothing effect on skin irritation caused by heat: average 69.60% improvementpartly backed
    • Relief of heat-induced enlarged pores and pore improvement: 25.17% decreasepartly backed
    • Moisture improvement with 1 use: 293.89% increasepartly backed
    • Proven UV blocking effect SPF 50+/ PA++++partly backed
    • Cool without stickiness, powerful UV blockingpartly backed
    • A stick type that glides on moist and smoothly with a refreshing cooling sensationpartly backed
    • Skin low-irritation test completedpartly backed
    • No added artificial fragrance · colorantspartly backed
    • Korea Vegan Certification vegan-certified product that does not use animal-derived raw materials, manages cross-contamination, and has not conducted animal testingpartly backed
    • Eco-friendly package using FSC-certified paperpartly backed
    • Cooling patented ingredient Patent No. 10-1793098, a patented natural plant complex extract that helps cool the skinpartly backed
    • Mild UV blocking care that adds soothing to cooling will deliver coolness and soothing to the skinpartly backed
    • Felt a refreshing cooling sensation 96%partly backed
    • Felt moisturized 98%partly backed
    • Applies refreshingly 96%partly backed
    • Easy to use 99%partly backed
    • Product satisfaction 95%partly backed
    • 48-hour moisturization persistence evaluation: immediately after 1 use 293.69% increase, 46.70% maintained 48 hours after useno supporting source found
    • Soothing of UV irritation 26.59%no supporting source found
    • Sweat • Activity • Sand • Mask • UVA • UVB 6-proofno supporting source found
    • Cumulative sales surpassed 2.5 million! Proven No. 1 K-beauty cooling sun stickno supporting source found
    • Olive Young No. 1no supporting source found
    • Glowpick Award 1st place for 3 consecutive timesno supporting source found
    • Atcosme Korea Sun Stick No. 1no supporting source found
    • Not only UV protection but also powerful moisture recharge!no supporting source found
    • Biodegradable soybean oil ink usedno supporting source found
    • Contains a large amount of Aloe Vera leaf juice + moisture essence, 55% or moreno supporting source found
    • Used an airtight patented container. [Patent No. 10-1760637]no supporting source found
    • Jeju-grown fresh aloe delivers full moisture to tired skinno supporting source found
    • We are exposed to sunlight and UV rays every day, and our skin receives heat stimulation. This small heat stimulation can lead to lowered skin condition and concerns about heat aging.no supporting source found
    • Helps improve skin moisture loss amountno supporting source found
    • Helps improve skin dead skin cellsno supporting source found
    • Helps improve skin surface moisturizationno supporting source found
    • Improves cleansing effect by primary cleanser (soap or cleanser)no supporting source found
    • Skin irritation soothing effect caused by external stimuli (physical stimuli)no supporting source found
    • Special formulation designed to minimize moisture evaporation during product useno supporting source found
    • CURE pursues clean beauty, excludes unnecessary elements, and researches what my skin wants and the best efficacynothing specific to check

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Are the claims about it backed up?

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These are counts of claims, not products. One product can name the same ingredient in several claims, and we checked each one on its own.