I wear this daily in place of sunscreen while doing early AM sun exposure for 30 minutes.  Thanks to this 'sun shield' I can absorb fine IR rays that promote eye health, Vit D production, dopamine stimulation and overall well-being without major facial sun damage.  Very comfortable, breathable and lightweight. Effective natural sun block. Recommend for sun worshipers for private use, would look like a bad guy at the beach!