Rohto Yojun Sui α
One drop before bed for eyes strained during the day. Eye drops focused on corneal repair during sleep
Ideal for / When to use
Product Overview
Rohto Yojun Sui α is an eye drop designed around the idea of restoring daytime eye strain through “nighttime recovery.” With active ingredients that help protect the cornea and moisturizing sodium hyaluronate as an additive, it nourishes, hydrates, and supports recovery of the eyes. A mild cooling sensation at level 2 makes it easy to use before bed, and the free-angle nozzle plus one-touch screw cap are designed for comfortable application even in the dark.
Product Features
Focused on corneal repair during sleep
Before bedtimeCorneal cells become more metabolically active during sleep, when repair progresses. These eye drops are designed so that nutrients applied before bed can support eye recovery overnight. Application at least 5 minutes before sleep is recommended.
4 corneal-protective ingredients + sodium hyaluronate
Nourish & hydrateFour active ingredients—sodium chondroitin sulfate, taurine, natural vitamin E, and potassium L-aspartate—plus sodium hyaluronate as an additive. Helps keep eyes moist while encouraging recovery of tired eyes.
Mild formula with cooling sensation level 2
Low irritationA mild, gentle cooling sensation at level 2. Low-irritation design that’s easy to use before bed, and suitable for those who dislike a strong tingling feel or have sensitive eyes.
Active Ingredients
| Ingredient | Amount | Category |
|---|---|---|
| Sodium chondroitin sulfate | 0.5% | Active ingredient |
| Taurine | 0.5% | Active ingredient |
| d-α-Tocopherol acetate (natural vitamin E) | 0.03% | Active ingredient |
| Potassium L-aspartate | 0.5% | Active ingredient |
| Sodium hyaluronate | Additive (thickener) |
Indications
Dosage and Administration
| Age | Dose per use | Times per day |
|---|---|---|
| Adults (children under parental guidance and supervision) | 1–3 drops per use | 5–6 times a day |
❓ Frequently Asked Questions
QWhy use it “before bedtime”?
ACorneal cells are most metabolically active during sleep, when damage repair progresses. Applying drops before bed helps nutrients support corneal repair overnight and supports a refreshed feeling in the morning. Application at least 5 minutes before sleep is recommended.
QCan I use it during the day?
AYes, it can be used up to 5–6 times a day. It is also effective for daytime eye fatigue and dryness. Suitable after using a PC or smartphone, or in dry environments.
QCan I use it while wearing contact lenses?
AIt can be used while wearing hard contact lenses. Do not use while wearing soft contact lenses. It is especially suitable for nighttime eye care after removing contact lenses.
QIs sodium hyaluronate a medicinal (active) ingredient?
AIn this product, sodium hyaluronate is included as an “additive (formulation thickener).” It is not an active ingredient, but it has excellent moisturizing ability and helps keep the surface of the eye comfortably protected.
QHow strong is the cooling sensation?
AIt is a mild formula with cooling sensation level 2. Designed to be gentle on the eyes and easy to use even before bed. Suitable for those who dislike a strong tingling feel or have sensitive eyes.
QWhat is a free-angle nozzle?
AA nozzle designed so you can apply drops from any angle. You can apply smoothly anytime, anywhere—including while lying down or looking upward. Designed for easy use even in the dark before bed.
- Consult a physician, pharmacist, or registered seller before use if you: (1) are under a physician’s care; (2) have ever had allergic symptoms caused by medicine or other products; (3) have severe eye pain; (4) have been diagnosed with glaucoma
- If the following symptoms appear after use, they may be side effects. Stop use immediately and consult a physician, pharmacist, or registered seller. Skin: rash/redness, itching / Eyes: redness, itching, swelling, stinging pain
- Stop use and consult a physician, pharmacist, or registered seller in the following cases: (1) if blurred vision does not improve; (2) if symptoms do not improve after about 2 weeks of use
- Do not use while wearing soft contact lenses
- For ophthalmic use only; do not take internally
- Do not let the tip of the container touch the eye, eyelid, or eyelashes
- When using on children, do so under parental guidance and supervision
- Store tightly capped in a cool place away from direct sunlight (avoid high temperatures of 40°C / 104°F or above)
- When closing the cap, twist until it clicks
- Keep out of reach of children
- Do not transfer to another container (may cause misuse or affect quality)
- Do not share with others
- Use as soon as possible after opening
- Do not use products past their expiration date
- If crystals form around the container opening, gently wipe them off with clean gauze
- Do not put other substances into the container for use