I can't tell ya'.....I don't know much about the 4s. It just appeared to be in the 4s. Maybe go to the 4 board....but I think they'll tell you that the other factors are what matters most when it comes to understanding your hair and what works for it.

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3b-ish... normal to low porosity....med. texture
Wash: Desert Essence Coconut shampoo, Acure argon shampoo
Deep Trestment: Nature's Nectars deep conditioner/styler
Condition: Nature's Nectars luv-n-a-bottle, Nature's Gate pomegranate sunflower
LEAVE-IN:Nature's Nectars luv-n-a-bottle, Natures Gate pomegranate sunflower
STYLE: Nature's Nectars Sweet Shea butter blend, Ecostyler gel
hemp oil, jojoba oil
www.naturesnectars.net