Helichrysum retortum, the flask everlasting or sea strawflower, is a species of plant from South Africa.

This straggling silvery shrublet grows up to 50 cm (20 in) tall, although the stems may be longer.

[4] The terminal disc shaped flower heads are nested in leaves and surrounded by white, glossy bracts that are brown or pink on the outside.

The ray florets are shiny white in colour and are often flushed with brown and pink.

[4] While this species has lost some of its habitat to urban development, it is still considered to be common and is listed as being of least concern by the South African National Biodiversity Institute.