Do proteins really work?

That's exactly what everyone else says, they work better when you work out, but have you tried them yourself by any chance?
And yeah steroids are evil, I don't want to end like Chris Jericho.

I work selling this stuff.

First off: Work out, if you don't it won't work squat, really.

It's better for you to get some 80% above purity protein to work your muscles first and then go for weight. Or better, what's your height and weight? Because if you're too skinny, proteins will only help with the muscle regeneration, but you'll feel tired easily, because you'll be lacking energy in form of sugars or carbs.

I can be helpful if you give me more info.

I talk in Spanish too if you prefer that.