the.com/conditioner

The peace treaty your hair signs after shampoo declares total war.

means A cosmetic product applied after shampoo to soften, detangle, and smooth hair — or, more broadly, any device or substance that improves the state of something, like an air conditioner.

from From the verb 'condition,' which traces back through Old French 'condicion' to Latin 'condicio,' meaning an agreement or stipulation — itself from 'condicere,' 'to agree upon' (com-, 'together,' plus dicere, 'to say'). The sense drifted from 'terms agreed' to 'the state or shape something is in,' and finally to 'something that puts a thing into good shape.' The hair-care meaning and the climate-controlling 'air conditioner' are both 20th-century children of that same idea: getting something into the right condition.

core ingredient
Often borrows softness from animal fat and silicone
the science
Positive charges cling to negatively charged damaged hair
origin
Early versions descend from 1900s mustache wax
the trick
Coats strands to fake shine and tame frizz
split ends
It hides them, never actually repairs them
for instance

pantene gold series — hair conditioner line created for textured hair, sold in over 100 countries

paul mitchell awapuhi — conditioner with awapuhi ginger extract, launched in 1980s hawaii

dyson supersonic — air conditioning technology in hair dryer, costs $399, launched 2016

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