John FriedaULTRAfiller+ Thickening Spray, Thickening & Strengthening Spray for Damaged or Thin Hair, Infused with Biotin and Hyaluronic Acid to Strengthen Hair for Thicker Fuller Results, 5 Oz

I think this works quite well. I do not have prior product knowledge to compare this too, have noticed some say it doesn’t work as well & has a funky smell but I think it works fine. It also smells good too. Maybe some got an old outdated batch or possibly theirs had been stored improperly in high heat? I’m a former stylist so I have used my fair share of products over the years. I’ve gotten used long ago to using different products for different things, like this product for example provides a decent thickening effect but not much hold so I use a spray gel, mousse or something w/hold with it. I also use a leave in conditioner as I have curly semi frizzy hair that is not super thick. I think the additional products also help add texture to my hair. As with everything it will react differently on everyone so try to base your decisions of reviews from people who have hair like yours. I would say this would be a good product for anyone with thin hair regardless if it is straight or curly & the diameter of each piece of hair is fine to regular.

Omg I love this stuff ! I wasn't going to buy it at first because I really didn't think it would do much good . My hair is fine and very straight and thin . In addition , I'm going through menopause which has caused my hair to become as dry as the desert 🏜. But I saw all of this positive reviews , so I decided to give this product a try . It's amazing! It really does what it says ! My hair looks so much fuller ! And it has so much body and some wave . My hair is normally poker straight. I'm going to continue buying this product for sure !

It does make my hair feel thicker - I am losing hair on my crown & it does seem to help hide it a bit.

Didn't work for me

I have thin hair and I finally found a product that works! It gives volume without a heavy, dull look or feeling. It looks fuller & feels silky, not oily or greasy feeling. Love, love, love the results! The best part is that it doesn't take a lot to get great results. I'm hooked! Apply it per directions, let hair air dry till it's just slightly damp and then blow dry for great results!

I got this for the first time a few months ago and I'm crazy about it!! It adds so much volume, it feels lightweight, it's not crunchy, it doesn't smell strong and it's a good smell. I love it. It's everything I wanted in one spray. I got the shampoo and conditioner recently too and they're honestly life changing.

best product I've used so far.. recommended to my seasoned friends who have also experienced thinning or brittle hair

Have used several times and didn’t notice much difference. My hair is short thin and gray. Was hoping for some more volume.It was not greasy and left hair soft.