Isochrysis galbana is a species of Haptophyta.

It is the type species of the genus Isochrysis.

[2] This unicellular is investigated for its high amount of fucoxanthin (18.23 mg/g dried sample).

[3] The Isochrysis galbana extract is said to have certain cosmetic and hair-growth properties when using hexane, ethyl acetate, ethanol, water, methanol, or isopropanol as extractants.

[4] I. galbana has a chloroplast, whose genome sequence has been published in 2020.