Why did Susan's hair change colour?
In Monsters VS Aliens when Susan begins to grow in the church her hair changes from black to white. Throughout the movie (including when she's temporally reduced back to normal size), her hair keeps its new white colour.
If the change in her hair colour was caused by the Quantonium why didn't it revert later in the movie? Why did no one appear to notice the change of colour?
Best Answer
There is no in-universe answer I got but logically my thinking says that Susan's hair changed to white because her hair pigment* got permanently damaged . So when she lost her power her hair remained the same colour because the pigments was permanently lost and doesn't turn brown again.
*Human hair turns white/gray with age due to loss of hair pigments and same can be due to some radiation etc.
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Narnia - Why Susan Deserved Better
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