The Row frargance oils are all anchored in sandalwood and are each named with a letter: R, O, and W. R combines its sandalwood base with tobacco leaves, esfand seeds, and rose, while O brings in notes of blue water lily, olibanum, and orris. W features amber, champa and incense woods.

The Olsen sisters were consumers of Oosten’s scent oils before they decided to collaborate with the artisan perfumer on fragrances for their own brand.

“We met Haley through her company, L’Oeil du Vert,” said Ashley Olsen. “We started wearing her oils, and the idea of creating something together was a natural progression of our relationship.”

Founded in 2005, L’Oeil du Vert specializes in fragrance oils and operates out of Oosten’s studio in Malibu, where the perfumer hand distils oils and mixes them with a range of raw materials, a number of which are locally sourced.

“From the start we agreed we wanted to layer another texture, another feeling to the experience of The Row,” explained Oosten of her collaborative collection with the Olsens, which has been four years in the making.