That's because there's no harmful alkali to hurt delicate fabrics or fade colors.
7 seconds sound clip from the Snow White and the Seven Dwarfs (1938) classic radio play.
You can hear this line at 00:27:00 in the radio play.
Quote context
[...]
- We'll hold you to that, Midgey.
- Good night, Mother! Pleasant dreams.
- Yes, Dot can rest easy about her lovely new nightgown, and all her underthings for that matter.
- As Mother Browning knows so well, anything safe in water alone is safe in Lux.
- That's because there's no harmful alkali to hurt delicate fabrics or fade colors.
- Use gentle Lux Flakes for your own nice things to keep them dainty and new-looking longer.
- Snow White and the Seven Dwarfs are ready to go on with their story.
[...]