Rohto Extra Cool Lubricant Eye Drops with Extra Cooling Sensation for Contact Lens Wearers, 13 ml
Rohto Extra Cool is a lubricant eye drop by Japanese brand Rohto with an extra-strong cooling sensation. Officially launched in Thailand by Rohto-Mentholatum (Thailand) Co., Ltd. The formula contains sodium hyaluronate and hypromellose for dual moisturising action — retaining moisture and restoring the tear film. L-menthol delivers an intense, immediate cooling effect that instantly relieves eye fatigue and tension.
Rohto Extra Cool sits between Rohto Cool (medium cooling) and Rohto Ice (maximum cooling) on the brand's cooling scale. Suitable for contact lens wearers. Sterile 13 ml bottle. Use within 1 month of opening.
Product Specifications
- Brand: Rohto
- Type: Lubricant eye drops with cooling effect
- Volume: 13 ml
- Cooling level: Extra Cool (enhanced)
- Contact lens friendly: Yes
- Sterile: Yes
- Shelf life after opening: 1 month
- Manufacturer: Rohto-Mentholatum (Thailand) Co., Ltd.
- Country: Thailand (Rohto — Japanese brand)
Key Ingredients
- Sodium Hyaluronate — intensive hydration, retains moisture on the corneal surface, restores the tear film
- Hypromellose — viscosity agent mimicking natural tear fluid for long-lasting lubrication
- L-Menthol — delivers the extra-strong cooling sensation, instantly relieves fatigue and burning
- Potassium Chloride — maintains electrolyte balance similar to natural tears
- Sodium Chloride — isotonic agent
- Boric Acid — pH buffer
Full Ingredient List
Potassium Chloride, Calcium Chloride Hydrate, Sodium Chloride, Hypromellose, Boric Acid, Sodium Borate, Sodium Hyaluronate, Polyoxyethylene Hydrogenated Castor Oil, Polyoxyethylene Polyoxypropylene Glycol, Disodium Edetate Hydrate, L-Menthol, Polyhexamethylene Biguanide, Hydrochloric Acid, Sodium Hydroxide, Purified Water.
Rohto Cooling Level Comparison
Rohto Aqua — cooling level 0
No menthol. Gentlest formula for sensitive eyes. Specialised for contact lens wearers.
Rohto Cool — cooling level 5
Medium cooling effect. Suitable for daily screen fatigue relief.
Rohto Extra Cool — enhanced cooling level
More intense cooling than Rohto Cool. Best for severe fatigue and intense eye strain.
When to Use
During contact lens wear
Creates a protective moisturising layer between the lens and cornea, reducing discomfort during prolonged wear. The cooling effect instantly refreshes tired eyes.
For screen-related eye fatigue
Prolonged screen use causes dryness and fatigue. Rohto Extra Cool instantly refreshes and moisturises, with menthol's cooling effect providing stronger relief than standard drops.
For irritation from dust and wind
Flushes out particles, soothes irritation from smog, wind, sun glare and chlorinated water.
How to Use
Application Instructions
- Wash hands thoroughly.
- Twist cap to open the bottle.
- Instil 1–2 drops into each eye.
- Use 5–6 times per day.
- Close the bottle by pushing the cap until it clicks.
- Use within 1 month of first opening.
Storage Instructions
Store in a cool place away from direct sunlight. Keep out of reach of children.
Warnings
- For external use in the eyes only.
- Do not combine with other brands of eye drops — wait 15 minutes if necessary.
- Consult an ophthalmologist if persistent irritation occurs.
- Keep out of reach of children.
- Use within 1 month of opening.
Frequently Asked Questions
How does Rohto Extra Cool differ from Rohto Aqua and Rohto Cool?
Rohto Aqua has no cooling effect (level 0) — the gentlest option for sensitive eyes. Rohto Cool has a medium cooling effect. Rohto Extra Cool provides more intense cooling for those who need stronger refreshment during severe eye fatigue.
Can Extra Cool be applied onto contact lenses?
Yes. The product is suitable for contact lens wearers. It is recommended to wait 15 minutes before re-inserting lenses after application.
Is menthol safe for eyes?
Yes, L-menthol at the concentration used in Rohto drops is safe. It creates a cooling sensation via nerve receptors without chemical impact on the cornea.
How long can the bottle be used after opening?
1 month. Discontinue use immediately if the solution becomes cloudy.
What symptoms are these drops suitable for?
Fatigue, dryness, burning and irritation from screens, dust, wind, chlorinated water and contact lens wear — particularly when a stronger cooling effect is desired.