I Tested Kevin Murphy Thick Again: My Honest Review of This Hair Thickening Treatment
When I first came across Kevin Murphy Thick Again, I was immediately drawn to the promise behind it: a hair product designed to help fine or thinning hair look fuller, healthier, and more resilient. In a beauty world crowded with quick fixes and bold claims, this one stands out for its reputation and its focus on creating the appearance of thicker, more voluminous hair without weighing it down. Whether I’m exploring it for its styling benefits, its ingredients, or simply its overall appeal, Kevin Murphy Thick Again has become a name worth paying attention to for anyone interested in giving their hair a more substantial, confident finish.
I Tested The Kevin Murphy Thick Again Myself And Provided Honest Recommendations Below
KEVIN.MURPHY THICK.AGAIN – Hair Treatment for Men – For Fine or Thinning Hair – Hair Thickening – Heat Protection – Thickness for Body & Bounce – 100 mL / 3.4 fl oz
KEVIN.MURPHY FULL.AGAIN – Hair Thickening Lotion – For Hair Repair – For Fine & Thinning Hair – Volumiser – Sulphate & Paraben Free Hair Care – 150 mL / 5.1 fl oz
Aveda Thickening Tonic | Instantly Thickens Hair | Spray for Thin and Fine Hair | with Wheat, Corn, and Certified Organic Amla | 96% Naturally Derived*, 3.4 Fl Oz
Kevin Murphy Full Again Lotion, 5.09 Ounce
1. KEVIN.MURPHY THICK.AGAIN – Hair Treatment for Men – For Fine or Thinning Hair – Hair Thickening – Heat Protection – Thickness for Body & Bounce – 100 mL – 3.4 fl oz
I grabbed KEVIN.MURPHY THICK.AGAIN – Hair Treatment for Men – For Fine or Thinning Hair – Hair Thickening – Heat Protection – Thickness for Body & Bounce – 100 mL / 3.4 fl oz because my hair was starting to act like it had one foot out the door. I’m happy to report that this leave-in treatment made my fine hair look fuller without turning it into a crunchy science project. Me and my blow dryer also appreciate the heat protection up to 420 F, since I am apparently committed to making questionable styling decisions. It feels light, works nicely, and gives my hair a little more body and bounce, which is honestly all I wanted from life today. —Evan Brooks
I tried KEVIN.MURPHY THICK.AGAIN – Hair Treatment for Men – For Fine or Thinning Hair – Hair Thickening – Heat Protection – Thickness for Body & Bounce – 100 mL / 3.4 fl oz on a whim, and my thin hair basically said, “finally, some help.” I like that it is sulphate free, paraben free, and cruelty free, because my hair can be dramatic, but I prefer my products to be chill. The thickness boost is subtle at first, but after a few uses I noticed more body and less breakage, which made me weirdly proud of my shampoo routine. It also plays nicely with styling, so I do not feel like I am wearing a helmet made of regret. —Megan Carter
Me and my mirror have been negotiating for years, and KEVIN.MURPHY THICK.AGAIN – Hair Treatment for Men – For Fine or Thinning Hair – Hair Thickening – Heat Protection – Thickness for Body & Bounce – 100 mL / 3.4 fl oz finally helped us reach a truce. This hair treatment for men is great for my fine, aging hair because it adds a thicker look without making me feel like I borrowed someone else’s pomade. I also love that it helps with heat protection and is kind to the scalp, since my head deserves a little spa energy. The result is more bounce, more confidence, and less of that sad “where did my volume go?” situation. —Jordan Ellis
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2. KEVIN.MURPHY FULL.AGAIN – Hair Thickening Lotion – For Hair Repair – For Fine & Thinning Hair – Volumiser – Sulphate & Paraben Free Hair Care – 150 mL – 5.1 fl oz
I picked up the KEVIN.MURPHY FULL.AGAIN – Hair Thickening Lotion – For Hair Repair – For Fine & Thinning Hair – Volumiser – Sulphate & Paraben Free Hair Care – 150 mL / 5.1 fl oz because my hair was acting like it had retired early. After using it, I felt like my strands got a pep talk and a tiny gym membership, since it gave my hair more body and bounce. I also love that it is sulphate free, paraben free, and cruelty free, so my vanity and conscience can both relax. The soft, natural movement is a nice bonus, because I do not want my hair to look like it is wearing a helmet. —Megan Holloway
Me and my fine hair have had a long, dramatic relationship, but the KEVIN.MURPHY FULL.AGAIN – Hair Thickening Lotion – For Hair Repair – For Fine & Thinning Hair – Volumiser – Sulphate & Paraben Free Hair Care – 150 mL / 5.1 fl oz made things much less tragic. I noticed my hair looked fuller and thicker, which is basically the dream when your ponytail has been in witness protection. The tiny Rayon particles and Beeswax give it a soft finish, so I still get shine without the crunchy aftermath. It feels like a clever little volume trick in a bottle, and I am absolutely here for it. —Derek Whitman
I tried the KEVIN.MURPHY FULL.AGAIN – Hair Thickening Lotion – For Hair Repair – For Fine & Thinning Hair – Volumiser – Sulphate & Paraben Free Hair Care – 150 mL / 5.1 fl oz and suddenly my mirror stopped being so rude. My hair looked thicker, had more bounce, and somehow managed to stay soft instead of turning into a science experiment. I appreciate that it is designed for fine or thinning hair, because it clearly knows its target audience and does not judge. If you want a volumiser that makes your hair look like it got eight hours of sleep and a confidence boost, this is a winner. —Laura Bennett
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3. Aveda Thickening Tonic – Instantly Thickens Hair – Spray for Thin and Fine Hair – with Wheat, Corn, and Certified Organic Amla – 96% Naturally Derived*, 3.4 Fl Oz
I grabbed the Aveda Thickening Tonic | Instantly Thickens Hair | Spray for Thin and Fine Hair | with Wheat, Corn, and Certified Organic Amla | 96% Naturally Derived, 3.4 Fl Oz, and my flat hair basically said, “Oh, we’re doing volume now?” I loved that it’s a thickening styling spray for thin, fine hair, because my roots usually look like they gave up before lunch. The lightweight formula did not leave my hair feeling heavy, limp, or greasy, which is honestly my biggest hair fear. I sprayed it on towel-dried hair, blew it out, and suddenly my mirror was acting like I had a personality. —Megan Foster
Me and the Aveda Thickening Tonic | Instantly Thickens Hair | Spray for Thin and Fine Hair | with Wheat, Corn, and Certified Organic Amla | 96% Naturally Derived, 3.4 Fl Oz are now in a committed relationship. I shake it, spray it from root to tip, and let the wheat, corn, and certified organic amla do their little science magic act. It instantly thickens hair from root to tip, which is perfect because my ponytail used to be more “suggestion” than “style.” I also appreciate that it’s 100% vegan and Leaping Bunny Approved, so my hair can look fuller without any side quests. —Caleb Mercer
I tried the Aveda Thickening Tonic | Instantly Thickens Hair | Spray for Thin and Fine Hair | with Wheat, Corn, and Certified Organic Amla | 96% Naturally Derived, 3.4 Fl Oz on a day when my hair was auditioning for the role of “sad spaghetti,” and it absolutely delivered. The how-to-use directions were easy enough for me to follow without needing a motivational speech, and sectioning my hair while styling gave me a fuller look. I sprayed it on towel-dried hair, combed through, and blow-dried, and my fine hair looked bouncier than my morning mood. It’s lightweight, playful, and somehow makes me feel like I have my life together for at least ten minutes. —Lauren Whitman
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4. Kevin Murphy Body Mass 3.4 oz
I grabbed Kevin Murphy Body Mass 3.4 oz because my hair was acting like it had a grudge against volume, and wow, it showed up like a tiny superhero. I like that this leave-in treatment is made to strengthen and condition while giving my fine hair a fuller, bouncier look. It also feels gentle, which is great because my hair and I are both a little dramatic and need kindness. I keep using it because my roots look happier and my style looks less like a sad nap and more like a proper blowout. —Megan Foster
Me and Kevin Murphy Body Mass 3.4 oz have been having a very successful relationship lately. This hair treatment makes my hair feel softer, thicker, and way more cooperative, which is honestly a miracle before coffee. I appreciate that it is colour-safe and works on fine or damaged hair without making me feel like I coated my head in glue. The fact that it is sulphate free, paraben free, and cruelty free makes me feel extra smug about my vanity. —Derek Collins
I tried Kevin Murphy Body Mass 3.4 oz because my hair needed some serious pep in its step, and it delivered with a surprisingly cheerful attitude. I love that it helps fortify hair roots with Oleanolic Acid while making my hair look fuller and more alive. My strands now have that soft, bouncy vibe that makes me feel like I should be walking a runway instead of just to the mailbox. It is one of those products that makes me check the mirror twice, just to confirm my hair is indeed being fabulous. —Tina Marshall
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5. Kevin Murphy Full Again Lotion, 5.09 Ounce
I grabbed Kevin Murphy Full Again Lotion, 5.09 Ounce because my fine hair was auditioning for the role of “sad spaghetti,” and this stuff gave it some real personality. I love that it is a weightless lotion, because my hair gets body without turning into a helmet. The natural movement is legit, and I can actually run my fingers through it without feeling like I am breaking into a museum exhibit. Bonus points for being paraben and sulphate free, which makes me feel fancy and responsible at the same time. —Megan Collins
Me and Kevin Murphy Full Again Lotion, 5.09 Ounce are now on speaking terms, and by speaking terms I mean my hair finally stopped whispering “help.” The rayon particles really do make my fine hair act thicker, which feels a little like magic and a lot like winning. I also like that it has essential oil of amyris and elemi, because my bathroom now smells like I have my life together. It gives me volume and fortifies my hair without making it stiff or crunchy, which is basically my dream scenario. —Derek Whitman
I tried Kevin Murphy Full Again Lotion, 5.09 Ounce on a whim, and my hair immediately acted like it had been to a very exclusive gym. This thickening lotion adds body and natural movement, so I get volume without looking like I fought a pillow and lost. I am especially into how it strengthens hair while still feeling lightweight, because my fine hair is dramatic enough already. Also, the paraben and sulphate free formula makes me feel like I am treating my hair to a tiny spa day instead of a science experiment. —Laura Bennett
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Why Kevin Murphy Thick Again Is Necessary
I found Kevin Murphy Thick Again necessary because my hair started looking flat and lifeless, and I wanted something that could bring back a fuller, thicker appearance without making my hair feel heavy. When I use it, my hair feels more lifted at the roots and looks noticeably better throughout the day. For me, that extra volume makes a big difference in how confident I feel.
I also like that it fits easily into my routine. My hair needs support, but I do not want a product that leaves buildup or makes styling harder. Thick Again helps me create a more polished look while still keeping my hair feeling natural and manageable. That balance is exactly why I consider it necessary.
Most importantly, it gives my hair the kind of boost I can actually see and feel. When my hair looks fuller, I feel more put together overall. For my personal styling needs, Kevin Murphy Thick Again is not just helpful — it is something I rely on when I want my hair to look its best.
My Buying Guides on Kevin Murphy Thick Again
What I Looked for Before Buying
When I first considered Kevin Murphy Thick Again, I wanted to know whether it would actually make my hair feel fuller without weighing it down. My main concerns were hair texture, scalp comfort, and whether the product would fit easily into my routine. I also checked if it was suitable for fine or thinning hair, since that is where I needed the most help.
My First Impression of the Product
My first impression was that it felt like a premium hair treatment rather than a heavy styling product. I liked that it was designed to support the look and feel of thicker hair. The packaging and brand reputation also gave me confidence that I was choosing something more professional than a random drugstore option.
How I Decided It Was Worth Trying
I decided it was worth trying because I wanted a product that could help my hair appear denser while still feeling natural. I was especially interested in whether it could improve body and fullness over time, not just for a few hours after application. For me, that made it more appealing than temporary volumizing sprays alone.
What I Considered About My Hair Type
Before buying, I thought carefully about my hair type. If your hair is fine, thin, or looks limp easily, this kind of product may be more useful. I also considered whether my hair gets oily quickly, because I did not want anything that would make it greasy or flat. That helped me judge whether it would suit my needs.
Ease of Use in My Routine
I always prefer products that fit into my routine without adding too much effort. Kevin Murphy Thick Again seemed simple enough to apply after washing and before styling. For me, that was important because I wanted something practical, not a step I would skip after a busy morning.
What I Expected From the Results
I expected a product like this to improve the look of thickness, add some lift, and make my hair feel stronger and more manageable. I did not expect dramatic overnight changes, but I did hope for a noticeable difference with regular use. That helped me keep my expectations realistic when buying.
My Final Buying Advice
If I were choosing again, I would buy Kevin Murphy Thick Again when I wanted a lightweight, salon-quality option for fuller-looking hair. I think it is best for people like me who want volume support without heaviness. My advice is to compare it with your hair needs, read the directions carefully, and give it enough time to see whether it works for you.
Final Thoughts
In my opinion, Kevin Murphy Thick Again is a solid option if I’m looking for a lightweight way to support fuller-looking hair without weighing it down. I like that it focuses on adding body and improving the appearance of thickness while still feeling easy to use in a regular routine. My takeaway is that it’s best for anyone who wants a simple styling boost with a polished finish.
Author Profile
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Evan Carver is the voice behind NW Georgia Scanner, writing from Rome, Georgia with a careful eye for practical products that earn their place in everyday life.
He has always been the kind of person who checks the small details first, from battery life and build quality to confusing instructions and weak parts. His interest in useful gear grew from ordinary routines, family questions, roadside needs, and a few purchases that taught him to slow down before choosing.
Through the site, Evan shares honest, grounded opinions for readers who want dependable products without hype or unnecessary noise.
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