Heat all ingredients together except ammonium hydroxide and perfume until all are dissolved and mixture is homogeneous. Stir gently while heating. Cool to 40-45'C and adjust pH with ammonium hydroxide to 9.3 if it is lower. Add perfume and continue stirring until thoroughly dispersed. Package. No.2 (Lotion) Ammonium Thioglycolate (no amines): Hi-test solution should be 7.5-8%; solution for average hair 7-7.5%; for easy-to-wave hair (bleached and dyed), 5.5 percent. The pH should be 9..3-9.4. The ammonium thioglycolate concentrate is diluted with distilled or de-ionized water, and fresh 28% Aqua Ammonia is used to raise the pH. Perry'S "Emulsifier X-390" may be added for a stable opacifier as it contains wetting agents. No.3 Monoethanolamine Thio plus Aqua Ammonia: Same percentages of thio as for No.2, but the pH should be 9.2. The concentrate is diluted with distilled or de-ionized water. After the pH has been raised to 8.9 with iron-free monoethanolamine, fresh 28% Aqua Ammonia is ad