HE HH has a cone but the HE Smooth should work as a clarifier.... you're saying you washed with this and it didn't work?

I honestly don't see that much of a difference in your before and after pictures, but I believe you if you say your hair feels like it has buildup in it.

^Jessiebanana pointed out that a lot of your products have ingredients that buildup.

Try clarifying again with the HE Smooth (or heck, some diluted dishsoap if you need it), and then add a simple conditioner and a product with all water-soluble ingredients that won't build up.... see if that helps.

Otherwise do you have hard water? You may need a chelating poo.
fine - normal porosity*?- medium density - normal elasticity. Hard water. SoCal.
*Used to be low-porosity, but I lightened my hair 1-2 shades, so I may be normal-porosity now.

New climate! Current favorites:
Low-poo: CJ Gentle Cleansing Shampoo, Giovanni SaS
RO: V05 Kiwi Lime
Styler: UFD CM (old formula), FSG + CNPF
PT: CJ Repair Me, IAgirl's gelatine

Experimenting with: JC Confident Coils, JC Rockin Ringlets, CJ CIAB, gelatin gel

iherb discount code: CFN646