Ineffective for congestion
I experienced no effects aside from feeling neither tired nor stimulated, yet my eyes remain perpetually congested. Using Japanese-made nutritional eye drops does improve blood circulation, but only for a brief period. This product clearly does not alleviate congestion. If you wear lenses or glasses, you'll feel like Sauron. It's rather expensive and underwhelming, so I've switched to another option, which proves equally ineffective, leading me to consider returning to this product.
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