The Delish designer used two patches before ice cream, cheese-heavy pasta and a full day of dairy, reporting no symptoms over several days.
Barrière says the wearable patches deliver 2.5mg of lactase through the skin, avoiding pills and meal timing, and were third-party tested at an MHRA-regulated UK facility.
A gastroenterologist called the idea interesting but said clinical evidence is needed that transdermal lactase can reach the gut and remain active. Barrière launched the product earlier in 1,700 Walmart stores.
As Barrière expands into Walmart, is it selling a health revolution or a well-marketed placebo?
Are Barrière's patches legally 'impermissible' supplements under US federal law?