Builds texture for a long-lasting effect R+Co’s mega thickening treatment is your secret to big, bold hair! It amps up texture for that long-lasting, volumized look without weighing you down. Plus, you’ll see the magic happen in just minutes – instant volume boost, right when you need it!
Builds texture for a long-lasting effect R+Co’s mega thickening treatment is your secret to big, bold hair! It amps up texture for that long-lasting, volumized look without weighing you down. Plus, you’ll see the magic happen in just minutes – instant volume boost, right when you need it!
Builds texture for a long-lasting effect R+Co’s mega thickening treatment is your secret to big, bold hair! It amps up texture for that long-lasting, volumized look without weighing you down. Plus, you’ll see the magic happen in just minutes – instant volume boost, right when you need it!
Builds texture for a long-lasting effect R+Co’s mega thickening treatment is your secret to big, bold hair! It amps up texture for that long-lasting, volumized look without weighing you down. Plus, you’ll see the magic happen in just minutes – instant volume boost, right when you need it!
Last updated at 03/21/2026 22:28:16
R+CO DALLAS Biotin Thickening Treatment
Delivery between 27–31 Mar $35.50
R+co Dallas Biotin Thickening Treatment 3 Oz
Delivery $31.24
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
R+Co Dallas Biotin Thickening Treatment 89 ml / 3 oz
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
R+Co DALLAS Biotin Thickening Treatment 89ml
Delivery between Wed – Thu $9.70
R+Co DALLAS Biotin Thickening Treatment 89ml
Delivery $10
R+Co Dallas Biotin Thickening Treatment 89ml by Oz Hair and Beauty
Delivery between 24 Mar – 1 Apr $7.95
R+Co DALLAS Biotin Thickening Treatment 89ml
Delivery between 24–30 Mar $9.95
R+CO Dallas Biotin Thickening Treatment | 89ml
Free delivery
R +Co Dallas Biotin Thickening Treatment 89Ml , Size 85Ml
Delivery between 25 Mar – 1 Apr $9.95
Dallas Biotin Thickening Treatment
Delivery between Wed – Fri $12
originally posted on randco.com
I love every Dallas product and every other R+Co product I've ever used. This is a big miss for me. It weighs my hair down, makes it look dirty and even thinner. I thought maybe I messed something up the first time so I paid extra attention to the directions, set a timer, and rinsed it out really well the second and third times. It was the same result all three times. Oh well, can't win them all.
originally posted on nordstrom.com
I don’t know what these other reviewers have experienced because my results were great. My hair was not greasy, but I did check out the application video at r+co and it says to apply mid hair and down. I saw instants results and several people asked what I had done to my hair to make it thicker. It’s not a miracle though, so have reasonable expectations. I felt my hair was about 30% thicker and I’ll take it!
originally posted on randco.com
I bought mine at the salon and it’s amazing! My hair is very fine and thin… I tried so many products and was sceptical… but this really works! You do have to hold it for full 5 min, then rinse off… I skip conditioner and use leave in from R&co on my ends only… then I use defending spray and style! It literally looks like I have so much more hair! Love it!
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R+CO DALLAS Biotin Thickening Treatment
Delivery between 27–31 Mar $35.50
R+co Dallas Biotin Thickening Treatment 3 Oz
Delivery $31.24
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
R+Co Dallas Biotin Thickening Treatment 89 ml / 3 oz
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
R+Co DALLAS Biotin Thickening Treatment 89ml
Delivery between Wed – Thu $9.70
R+Co DALLAS Biotin Thickening Treatment 89ml
Delivery $10
I love every Dallas product and every other R+Co product I've ever used. This is a big miss for me. It weighs my hair down, makes it look dirty and even thinner. I thought maybe I messed something up the first time so I paid extra attention to the directions, set a timer, and rinsed it out really well the second and third times. It was the same result all three times. Oh well, can't win them all.
I don’t know what these other reviewers have experienced because my results were great. My hair was not greasy, but I did check out the application video at r+co and it says to apply mid hair and down. I saw instants results and several people asked what I had done to my hair to make it thicker. It’s not a miracle though, so have reasonable expectations. I felt my hair was about 30% thicker and I’ll take it!
I bought mine at the salon and it’s amazing! My hair is very fine and thin… I tried so many products and was sceptical… but this really works! You do have to hold it for full 5 min, then rinse off… I skip conditioner and use leave in from R&co on my ends only… then I use defending spray and style! It literally looks like I have so much more hair! Love it!
I have only used this once since just receiving a week ago. I thoroughly loved the results after just the one use and will continue to use. It’s truly a very unique treatment in every good sense of the word. Thanks so much for taking the time to produce this product.
This product was easy to use and incorporate into shower routine, I find it replaces conditioner. I didn't see as big a difference in volume/thickness as I wanted but it is a noticeable difference. My hair is super fine and low density the product didn't weigh it down or make it greasy. Still searching for holy grail for volume
I’ve never tried this product from R+Co before but it came free with my order …. It’s ok haven’t seen a big difference yet, but I only used it once so let’s see what happens. I’m also not too thrilled about the smell. I like the television shampoo and conditioner smell better.
Just used it this morning and followed instructions. My hair was a bit thicker looking , luckily I used extra conditioner after shampooing with Dallas shampoo as I know thickening products cause my hair to be on the dry side. I have a short bob and it is a bit too fluffy after this treatment but no frizz. Next time I will only use it on the root and halfway down my hair, no on the bottom of my hair. I don't like my entire head of hair to look puffy. It does work, have to adjust application next time. Also, a very small amount is needed, hopefully this tube will last awhile as it is on the pricey side for 3 ounces of product. Time will tell if the no frizz thru 10 washes is true.
I am fast approaching 78! My hair is grey/ white, as I no longer color it. I have a wonderful stylist but my hair is thinner, which is probably age related. This product was the best thing I have tried. So easy to use… and the results… 5 star! The fact thatI use it when I wash my hair is just perfect, also. Easy and the results are terrific. I can style as usual, but with more body. Awesome!
I haven't used this product for long, but it is already providing tons of volume!! It replaces my conditioner once a week or so- it smooths through my hair easily after washing and leaves it feeling extremely soft. By the time my hair air dries I can definitely tell I’ve got that Dallas effect 🌆 it’s a small bottle for the price but since I’m not using it everyday, I think it will go a long ways. I already have thick hair so I can’t really speak to the thickening effect... But if you’re looking for volumes give it a shot!
I have insanely dry scalp and very straight Asian hair. I have a razored shag cut so I like there to be movement and texture in my hair. This gives me texture to work with even with clean damp hair and its a CONDITIONER. WHAT IS THIS WITCHCRAFT?! This has helped my dry scalp so much and I actually condition my scalp first with Dallas conditioner to get the most moisture to my itchy and dry scalp.
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