Hey Ann-Charlotte!✨
The difference lies in the strength of the formula. The one with the white cork is the slightly lighter variant that works well if your hair mostly gets frizzy in humidity and you want a smooth sleekness. The one with the black cork is extra powerful and designed for really dry, curly, or unruly hair where you need more anti-frizz effect and longer durability.
So if your hair often struggles with moisture, the black one might be the savior, otherwise the white one does a great job 💖
Take care!