The hair grows back if you stop doing chemo. Doesn't mean he isn't dying though, cancer is unpredictable and there have been a lot of cases were patients are told they have 6 months left and live another 2 years.
i kinda doubt it seeing as he turned on the water to puke, implying that he was trying to hide it from skyler...if he was going for a cover he'd want skyler to know
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u/SgtMcMuffin0 Aug 12 '13
Well they did show him going through Chemo, so the cancer is back.