I don't know about the whole nutrients thing...I dont see how by putting something on the outside of your hair, that it would help its condition. I think nutrients would have to come from a well balanced diet and maybe supplements. ???

For shampoos and conditioners I like Suave...Most any of the naturals. Sometimes for a deep conditioner I use Hask's Henna n placenta or mane n tail mixed in with my Suave. I like to stay away from cones, so Suave works well for that and ya cant beat the price.

If you'd like something to combat frizzies or to add moisture, as I am sure lots of people will say here...Oil, oil, oil. I personally like olive oil. I have only recently started using cocoa butter and find it a bit heavy while on and hard to remove...But my hair becomes super soft afterwards.

Hm,not sure about nutrition in shampoos/conditioners.......
But I use rather ''light'' shampoos on my hair,no silicones or too many conditioning ingredients that might build up rather quickly on my ultra-fine hair.I love the shampoo from Paula Begoun and RealPurity.
I also use a silicone-free conditioner(Matrix Biolage),although I don't use it full strength,always diluted with water.That's what works best for my fine,easily weighed down hair
For *nutrition* I take supplements,MSM and UltraHair.

I'm with Atlantis Allure on this one, I'm very happy with the Suave Naturals line... though I only use mine for CoW (conditioner with shampoo mixed for a scalp wash) wash, and then some heavier conditioner (I need the -cones) for the length.  I just started using "Silk Elements" moisturizing shampoo and conditioner and I really love it.  It has silk amino proteins and keratin with makes my hair very soft and shiney and manageable.

I have also used translucent henna to deep condition, and that works awesome!   I also just bought a trial pack of the Hask's Henna and Placenta, but I haven't tried it yet, but will keep you posted. 

Louisemarielonghairs for me. 

You could try to find someone with similar hairtype to yours and see how they have worked things out, or not .  Also, don't forget the product review section  .

Often, in order to see how something will work for you you have to get the old product cleared out and give it at least a couple of weeks IMO (opinions vary)...g

Hmm, I think sodium lauryl and laureth sulfate are two things you might want to avoid. I can't remember the exact reason why, but I've heard that those two ingredients may be harmful to one's health.

My favorite shampoos and conditioners are Pantene Pro-V Restoratives Time Renewal, Mane N' Tail, Joico K-PAK, Infusium23, hairformula37, Dr. Miracles, Creme Of Nature, Garnier Fructis, Biologe, Matrix, Redken, Aussie, Salon Selectives, L'oreal Vive, Fantasia IC, Herbal Essences, Clarol Defense, and Pantene Pro-V Expressions for red hair.  My favorite deep conditioners are Cholestral Deep Conditioning Cream and Dark&Lovely Cholestral Deep Conditioner.  I use the Pantene products daily, and the rest I use daily too.  But the deep conditioners I use once or twice a week.  i like to switch up on products.  My hair behaves better that way.

I have used only Aveda Madder Root shampoo and Rosemary Mint conditioner on my hair for the last 10 years or so. Now that I've gone more blonde I'll start using the Camomile shampoo when I run out of the Madder Root. I've occasionally tried a different brand, but nothing works like Aveda. It leaves my hair feeling the best in spite of the ridiculously hard watr we have here in Riverside CA.