Sorry to hear you're having trouble...
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 - low porosity - medium density - normal elasticity
Hot & humid tropical climate. Soft water.
Cowash: CJ Daily Fix
Low-poo: CJ Gentle Cleansing Shampoo, Giovanni 2chic BK&AO
RO: JMO Bare detangler, Giovanni SaS, SheScentit Okra
Styler: FSG with CNPF, CJ Pattern Pusha, Volumax Mega, Ouidad Climate Control
PT: IAgirl's gelatine, CJ Repair Me
Experimenting with: reincorporating cones
iherb discount code: CFN646