The Ordinary Retinol, which one for a beginner?

[WeCameToDance]

Hello, please help me!
I want to start using a retinol product in my skincare routine and I like the price point of The Ordinary so thought I would start there.
They have so many though of varying strengths and I don't know where to start.
I'm 27 and starting to notice the start of lines around my eyes and my face seems duller than it used to be.
I've improved my diet it was abysmal and upped my water consumption which has helped but I think it might be time to eatablish a good skincare routine.

The granactive retinoid 2% in squalane is their most gentle one, so good for a beginner and shouldn’t cause too much irritation. Just make sure you’re using a decent SPF as it will make your skin more sensitive to the sun (and anyway, wearing an SPF every day is one of the best things you can do for your skin!)