Cool 40 Alpha Eye Drops

Japan's iconic menthol eye drop experience taken to its highest level — ROHTO Cool 40 Alpha delivers an intense cooling sensation backed by six active quasi-drug ingredients formulated to address eye fatigue, redness, blurred vision from close work, and contact lens discomfort. The '40' in the name signals maximum menthol concentration within Japan's Ministry of Health, Labour and Welfare (MHLW) regulatory framework for over-the-counter eye drops, making this the strongest cool-sensation variant in the Cool series. Designed for heavy screen users, students, office workers, and anyone whose eyes face daily strain, Cool 40 Alpha provides immediate relief and lasting corneal conditioning. The refreshing tingle on instillation is followed by genuine symptomatic improvement — not just a masking sensation. Manufactured under Japan's quasi-drug pharmaceutical standards, each batch is quality-controlled to the same rigor as prescription-adjacent formulations.