I have waist length hair and it's medium curly and I can get 2 treatments out of the $50 bottle so I would guess that with the small bottle you could get one treatment if your hair is fairly damaged.

If your hair is waist length, you will certainly need more than a small bottle to saturate the hair for best results. I would recommend purchasing the larger bottle because you will still be able to return to Sephora if you are dissatisfied with the results on your hair type. If you use the small bottle which is still a bit pricey, you will not be able to return after using all of the product. I'm not sure of the results on straight hair as I have curly hair, but I am confident that it will improve the texture even if you just have thick hair.

The product is very concentrated so I think that trying the medium size bottles will work out for you. I also have long hair, down to my waist it's curly and I have a lot. I bought the trial version with the 3 products and I am going to make an order now to get the rest of the collection. They are amazing on curly hair.

I have medium length hair (fine naturally curly hair) and the small bottle will last me several treatments. It does not take a lot ot cover my hair. I wash and condition my hair as normal- then apply the deep treatment- apply a plastic cap- use the blow dryer to heat it up and wrap my hair in a towel. After the 12 minutes I apply regular conditioner then rinse it all out. After using the 12 min deep treatment I do not need to use regular conditioner every night like I did before finding this product.
I would assume it would be great for straight hair as well but I have natural curly hair myself and the product line is geared for curly hair.
Good luck...

It's just for curly hair. Also, the small $25 bottle runs 2.5 ounces and the directions say apply 2 ounces of it to shoulder length hair and more for longer hair, so probably for butt length hair, you'd want to do 3 or 4 ounces of it. The $50 bottle would probably last for three washes, but if you're just trying it and have curly hair, get a Ouidad starter kit that includes the hair treatment and other goodies so you aren't wasting your money on one thing and end up not liking it. But at least Sephora does returns!

I think this would help any kind of hair - straight or curly. If it is dry or damaged, this conditioner WILL repair it. You don't have to use a ton for it to work, but you want to make sure you coat all of the strands so that it does work!

I use this on my relaxed hair and it does a fantastic job. It definitely does all it claims to do for my hair.

About a month usually, ut it gets beter every time you use it.

If your hair is that long, I would definitely go with the large bottle. You need to put a lot on your hair (a full 1-2 ounces PER application) and since your hair is so long, the small bottle would probably only yield one use for your hair.

If your hair is that long you would probably only get one to two treatments out of a small bottle. The bigger bottle is the better value.

This is a protein treatment. SO unless your hair is crazy damaged, don't use it more than once every 4-6 weeks.

It should be used once a month. I have tight curls and I color my hair. I've used this once a month for a year now and my hair is fabulous. I do not recommend using it once a week like some are suggesting... I would get a leave-in conditioner instead, and use the deep treatment once a month. Also, try use moisturizing shampoos (once or twice a week) and conditioners (everyday).

It depends on what kind of condition your hair is in. If you have never used a deep treatment, or your hair is ravaged from processing, every week is a good rule of thumb. Otherwise, every 2-3 weeks should be plenty, unless your hair consists of coarse 3c-4a curls. If the latter is true, it might benefit from a treatment every week regardless.

I find that once every other week does the trick, but if you have dry hair, once a week would probably be best.

Yep, once a week, and use the shower cap and heat too. Product penetrates better with heat.

Once a month is what Ouidad reccomends, twice if you have bleached/coloured hair

Depending on how damaged your hair is, you could use it as much as once a week to as little as once a month.
If you have very very damaged hair, I would use it once a week at least. I would also rinse it with cold water and get a good deep conditioner to put in it when you rinse it out.

If you have little to no damage, then it's probably best to use it once a month.
It's a very expensive product, so there is no point in wasting any depending on what type of hair you have.

I use this usually once every two weeks as per the instructions. If I feel my hair is starting to become unruly, I will use it once a week. I sometimes also add a little to my regular conditioning for an added boost.

The Ojon treatment is probably not great for curls- it really seemed to weigh the hair down in comparison rather than really restore bounce and shine to the hair. To add to this, the Ojon treatment tends to have a smell that is offensive to most noses. Very strong, and it lingers even after shampooing. Having said that, it might be that Ojon works great if your heat styling curls straight. Still beware the smell though...

The Ouidad treatment is a protein treatment, not an oil treatment. Using the Ouidad treatment has definitely made a huge difference to my hair and has repaired the damage I used to have. I used to flat-iron it every day, and I had a ton of damage. In addition to using the Ouidad treatment twice a month, I wear my hair curly and allow it to air-dry. If you color your hair, wait one week after coloring to use it. If you are about to color your hair, don't use the Ouidad treatment beforehand. Wait until 1 week later, then use the Ouidad treatment.

The Ojon deep treatment is just palm oil with a bunch of fragrance added. In my opinion, you can get a similar treatment as Ojon by using plain palm oil from the health food store. If I am going to condition my hair with oils, I like to use olive oil.

It doesn't compare it is way better! Go to a Sephora store to get a sample and you will see! I have both and I will not be repuchasing Ojon, Ouidad is the best!

I've used the Ojon one and in my opinin the Ouidad is far superior. Easier to use, much easier to rinse, smells better and not oily or greasy.

I have tried Ojon and didn't see any lasting results. This product line is so much better then Ojon, Wen, or any other I have tried. You will see an amazing differnce in your hair with this product line.

Stop using any kind of heat on your hair, Alternate protein treatments ( such as this product) and deep conditioners every week. Don't use gels or products containing alcohol as this will make your hair dry and brittle. Try using cleansing conditioners or cowashing rather than shampoo in your hair. ALWAYS use a leave in conditioner, or leave a little regular conditioner in your hair after cleansing. If your hair is long and thick, remember that you need to use A LOT of conditioner in your hair. Use a wide tooth comb to distribute thick conditioner through your wet, cleansed hair and LET IT DRY WITHOUT touching it. Your hair should still be curly once it dries ( although it may shrink a little or alot in length depending onhow tight your curl pattern is). Blessings!

You need to just take better consistent care of your hair. I think ouidad is good after your hair is in a better place. i would use products like Miss Jessie's rapid recovery and curly pudding. Interestingly enough, the creators of Miss Jessie have a similar ethnic mix to yours. You also should trim your hair frequently and keep it very moisturized. Hope that helps.

I too had parents that nearly ruined my hair growing up. It started to grow super slow, and was frizzy all the time and just nappy. I've been using Quidad hair products for a about a year now, my hair started to grow faster, the frizz is gone, and my hair is really soft and managable. I use Deva Curl No-Poo and Conditioner, but I use Quidad deep treatment once a month, and Quidad styling products... moisture lock, climate control gel, & botanical spray.

You need some MAJOR deep conditioning and stay away from any heated products. Try Lush's Curly Wurly shampoo with their Retread conditioner and R&B as a leave in conditioner. A hair mask like Hsua Wen Wau or Jasmine & Henna Fluff-eaze would really help too.

There is a smaller 2-4 ounce bottle that can be purchased for basically a single treatment. Otherwise, not sure if your Sephora sales associate can give a large enough sample for it to be tried free of charge.

Ouidad's sample size is considered 2.5 oz. for the deep treatment (I have yet to see a sample). Sorry!

Yes, you can get them from the Ouidad website but I think Sephora gives out free samples as well (then you don't have to pay shipping)!

This product stripped my red hair colour horribly. I would not recommend you use it on colour treated hair.

THis product CANNOT be used as regular conditioner. It will leave your hair feeling hard if you don't 'seal' it with some kind of conditioner afterwards, as it is a protein treatment.

Not at all! I have naturally dark blonde hair, which I have dyed black then back to my natural color and I have not seen any discoloration or loss of color depth. This product has worked very well for me, but the key is to follow the instructions to a T, make sure that once you apply the treatment, you cover it with a shower cap and apply heat in order to activate it (the heat is VERY important). You can also leave it on for much longer than the recommended 12 minutes for a deeper treatment; I know the price is a tad steep, but it is definitely worth it.

Absolutely! My hair is straight but chemically treated and frizzy. I have just started using this product and I am amazed at how well it has worked for me. The key is to follow the instructions to a T, make sure that once you apply the treatment, you cover it with a shower cap and apply heat in order to activate it. You can also leave it on for much longer than the recommended 12 minutes. In fact, it is my opinion that the more damaged your hair, the longer you should leave it on. I know the price is steep, but it really has worked for me, so it is definitely worth it.

I would say it could work for straight hair, since my hair has about a 1" curl and I straighten mine every morning- this treatment leaves my hair soft, smooth, not oily or sticky.