20-40 mins depending on the person....but would not try it but...if you have to...slightly bend your knees to help your blood circulate..that would prevent you from passing out..
The chemicals used only last for a short time, usually about 6 months, although this varies from person to person. So colour or curl will 'fall' out after a while.
Even if the process was permanent, your hair continues to grow, so the colour or curl will not be in the hair coming out of your scalp.
The term, 'permanent' was invented because this treatment lasts a lot longer than a rinse or hair curlers.
Answer:
fats, carbohydrates, and proteins
Explanation:
they all give you energy and/or are nutrients and food
Two groups of organisms that help with biodegradation are fungi and bacteria
