A solid choice — #9 of 31 Organza ranks #9 of 31 fabrics for hot flashes. It is a good fabric for this. Ranked on breathability and moisture management, penalised for warmth and weight. The top pick is Linen.
Organza measures 72/100 for breathability, 8% moisture regain, 18/100 warmth, at 40 gsm. For hot flashes, high breathability and limited moisture absorption decide comfort — and its low warmth avoids trapping heat against the skin.