On its website, the medical skincare brand advises: 'Take 2ml every 4 hours while in the sun (preferably with 2+ oz of water).
'Wait 1 hour before exposure to the sun. Monitor sun exposure carefully.
'Take second dose if still in sun 3 hours after first dose.
'For extended intense exercise outdoors or if taking sun-sensitizing medications, use alternate protection after 30-40 minutes.'
Dr Ben Johnson, who founded the company, adds in his blog: 'If 2 mls are ingested an hour before sun exposure, the frequencies that have been imprinted on water will vibrate on your skin in such a way as to cancel approximately 97% of the UVA and UVB rays before they even hit your skin.
'This results in coverage for approximately three hours.
'This is similar to the amount of UV reflection created by SPF 30 titanium/zinc sunblocks but distinctly better than UVB chemical sunscreens which prevent certain damage that leads to the visible/painful/inflammation reaction we identify as sun damage.'
Harmonised H20 is yet to be endorsed by dermatologist bodies, however, the company website does carry testimonials for the product.