Schwarzkopf Natural Styling Hydrowave Neutraliser is specially formulated for use with Schwarzkopf's Hydrowave Glamour Wave perm—made with hydrolysed silk protein to produce a soft, glamorous perm simply rolling in luxurious silky-smooth curls and waves.

It's available in 2 strengths:

• Neutraliser—suitable for use with 0 or 1 perming lotion;
• Neutraliser +—suitable for use with strength 2 perming lotion.

Each strength comes in a 1-litre bottle, which is enough neutraliser for 10 applications of Glamour Wave.