Alto Astral by Byredo is a Floral Aldehyde fragrance for women and men. This is a new fragrance. Alto Astral was launched in 2025. The nose behind this fragrance is Jérme Epinette. Top notes are Coconut Water and Aldehydes; middle notes are Musk, Jasmine and Incense; base notes are Cashmeran, Sandalwood and Amber.