Well, I haven't used it but "nzuri" means good in Swahili so...
On a serious note, I looked at the ingredients and I don't see anything particularly special about it. For example if I compare the contents with what's in
Vitol's Great Hair, I see the biotin, B5, vitamin C, vitamin A are higher in the Vitol than in this vitamin. Also Nzuri refers to amino acids...but unless they are in the "proprietary blend" they seem invisible in the ingredient listing. Also I think "most comprehensive hair vitamin" is a bit of a stretch. The
Vitamin Shoppe's Hair Elements supplemental facts is as follows:
Supplement Facts
Serving Size 4 TABLETS
Servings Per Container 30
Amount Per
Serving
% Daily
Value
Vitamin C (As Ascorbic Acid)
300 Mg
500%
Niacin (As Niacinamide)
30 Mg
150%
Vitamin B6 (As Pyridoxine Hcl)
75 Mg
3750%
Folic Acid
800 Mcg
200%
Vitamin B12 (As Cyanocobalamin)
24 Mcg
400%
Biotin
1000 Mcg
333%
Pantothenic Acid (As D-Calcium Pantothenate)
100 Mg
1000%
Iron (As Ferrous Gluconate)
20 Mg
111%
Iodine (Kelp)
150 Mcg
100%
Zinc (As Zinc Gluconate)
30 Mg
200%
Copper (As Copper Gluconate)
2 Mg
100%
Manganese (As Manganese Gluconate)
10 Mg
500%
Para Aminobenzoic Acid
75 Mg
N/A*
Choline (As Choline Bitartrate)
250 Mg
N/A*
L-Cysteine
300 Mg
N/A*
ROSE HIPS (ROSE CANINA)(FRUIT)
12 Mg
N/A*
Inositol
125 Mg
N/A*
Soy Protein Isolate
10 Mg
N/A*
In hair vitamins, you'll find some things in one are missing in another or the quantities vary. Doesn't mean that the one with the largest quantities of the hair essentials is the best or will work best for everyone, but I believe the one with most complete/varied collections of "hair specific nutrients" would be the one that is most likely to work for many--since for a supplement to make a difference, your body must be lacking in the nutrient it provides. If you already get them in your diet, then taking it won't make a difference. But the more different nutrients there are included, the more likely that one may find one that their body needed. Hence my encouragement to people to get a full multi.
I also think people get so caught in one aspect of their bodies and forget that for things to work properly, the WHOLE body must be taken care of. So taking a multi just for hair may also fail to work coz your body is lacking other building blocks that would make the system work well to process say, hair vitamins and deliver them to follicles. Remember, your hair only gets served if your body is happy...otherwise all the "health" you are trying so hard to send to hair stops at the organs that are in need of it and more important as far as your body is concerned.
So IMO it's better to ensure you're getting a full multi first, and then find a hair one that doesn't make you overdose in oil-soluble supplements by bringing in more of the same coz toxicity could thwart your efforts. Alternatively,
The Vitamin Shoppe's Hair Skin & Nails provides nearly all the vitamins and minerals found in a regular multi as well as some hair-useful herbs, so while it's focused on what majority on this forum care about, it is not omitting supplements that would make the human machine be in good condition. And if the entire machine is well oiled, then all parts will be in better shape...including the hair.
That said, Nzuri might work for you...if the stuff it's got listed are missing from your diet/body.