"No Buy" Hair Product Challenge

Inspired by naturallycurly.com's New Year Hair Challenges, I am creating a No Buy/Stick to It challenge for myself.

I so do not need any new hair products. I need to use up my many, many products.  It's frustrating and overwhelming to have so much, and using different products every week or two is not helping my hair.  Other than gel, I can't remember the last time I finished a product!  I don't think my problem is that I haven't found the right products, but rather that I haven't found the right way to use the products.  

For my challenge, I will: 

1. Create a list of holy grail (HG) products to use for (at least) two months
2. Choose 1-2 HG products per category
3. Repurchase only my HG products as needed.  I will not purchase any other products that are not on my HG list

This way, I will use up product AND have a consistent hair regimen...and save some money!

I'd love to hear from anyone who has had success with sticking with the same products.