[Acne] On Accutane now, how likely am I to break out from stuff that used to break me out?

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I'm only a few days into a six month accutane treatment (40mg twice a day). I'm wondering how careful I need to be about avoiding the things I used to avoid before accutane, particularly products with fatty alcohols which I suspected were breaking me out a few months ago. I would love to know that I'll be safe using CeraVe products.And this question also goes for other habits, like avoiding sugar, avoiding dairy, changing pillowcase often, etc.
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Submitted by andysfriends