How to Get Thicker Hair With Kevin Murphy Plumping Wash

An educational guide from the Beauty AMZ research team. No hard sell, just what you need to know.
The Densifying Wash Routine
Wash with Plumping Wash as your regular shampoo. Wet hair thoroughly with warm water. Apply a coin-sized amount to the scalp. Massage with your fingertips for sixty seconds. The massage boosts blood flow while cleansing. Rinse completely. Repeat if hair is very oily. Apply a lightweight conditioner to the ends only. Leave it for two minutes. Finish with a cool-water rinse to seal everything. Do not pile conditioner on the roots. Heavy roots undo the densifying work. This routine builds thickness with every wash.
Applying Mousse for Maximum Lift
Mousse technique decides your volume. Start with damp, towel-dried hair. Dispense a golf-ball-sized amount into your palm. Flip your head upside down. Distribute the mousse through the roots with your fingers. Do not apply to the ends. Rough-dry upside down on medium heat until eighty percent dry. Flip upright and finish with a round brush. Lift each section at the roots while drying. Finish with a cool shot to set the lift. The result is lasting root volume that survives the day.
Styling Fine Hair for Fullness
Style strategically for maximum fullness. Blow-dry with a round brush, lifting at the roots. Set the style with the cool shot. Avoid flat-ironing the roots, which kills volume. Use Free Hold paste on dry ends for texture. The piece-y definition makes hair look denser. Sleep on silk to preserve volume overnight. In the morning, flip upside down and shake. Apply dry shampoo at the roots for refresh. These habits keep fine hair looking full for days.
Maintaining Healthy Ends
Healthy ends support the volume illusion. Apply Young Again oil to damp ends before styling. One to two pumps is enough. Trim every eight to ten weeks to remove splits. Split ends make hair look thinner. Use Smooth Again on frizzy days for polish. Protect hair from heat with proper products. Healthy ends reflect light and look fuller. Never sacrifice end health for volume. Both matter equally.
Long-Term Volume Strategy
Think long-term for lasting thickness. Use the Plumping Wash consistently for months. The densifying effect compounds over time. Get enough protein in your diet, since hair is made from it. Manage stress, which contributes to shedding. Avoid tight hairstyles that stress fine hair. See a dermatologist for sudden thinning. The right strategy combines products, habits, and health. Fine hair can look remarkably full with the complete approach.
Recommended Products
We researched each Kevin Murphy product for volume, density, and value. These five picks build a complete system for thicker-looking fine hair.

Best for: Fine, thinning hair needing density
KEVIN.MURPHY PLUMPING.WASH Densifying Shampoo, 250ml
- Densifying shampoo for thinning hair
- Ginger root and nettle extracts nourish follicles
- Paraben and sulphate-free
- Follow with PLUMPING.RINSE for best results
Pros
- Hair looks fuller after washing
- Gentle enough for daily use
- High-end salon formula
Cons
- Premium price
- Small bottle for the price
- Needs the full system for best results

Best for: Weightless volume that lasts
KEVIN.MURPHY BODY.BUILDER Volumising Mousse, 100ml
- Weightless mousse adds body
- Tangerine peel oil adds shine
- Memory hold resins for lasting volume
- Sulphate and paraben-free
Pros
- Volume without crunch
- Lovely citrus scent
- Long-lasting body
Cons
- Small bottle
- Easy to overapply
- Premium price

Best for: Weightless shine and heat defense
KEVIN.MURPHY YOUNG.AGAIN Hair Oil, 100ml
- Weightless leave-in treatment oil
- Immortelle supports repair and softness
- Heat protection up to 450 degrees Fahrenheit
- Adds strength and radiant shine
Pros
- Truly weightless feel
- Excellent heat protection
- Beautiful shine
Cons
- Luxury price
- Subtle scent
- Overuse flattens fine hair

Best for: Textured styles with natural shine
KEVIN.MURPHY FREE.HOLD Styling Paste, 30g
- Medium-hold styling paste
- Carnauba wax adds thickness
- Natural shine finish
- Works even in hot conditions
Pros
- Flexible, reworkable hold
- Adds visible thickness
- No stiffness
Cons
- Small 30g size
- Waxy if overapplied
- Premium price per ounce

Best for: Thick, frizzy hair needing control
KEVIN.MURPHY SMOOTH.AGAIN Leave-In Conditioner, 200ml
- Leave-in treatment for thick, unruly hair
- Anti-frizz smoothing formula
- Adds shine and manageability
- No rinse needed
Pros
- Tames thick hair beautifully
- Long-lasting smoothness
- Generous 200ml size
Cons
- Too rich for fine hair
- Premium price
- Can build up
Ready to Choose?
See our top product picks for kevin murphy plumping wash, or jump straight to the head-to-head comparison of the two most popular options.
Reading the Label: Lightweight Versus Heavy Formulas
The ingredient list tells you whether a densifying shampoo will lift fine hair or flatten it, and the signals are in the first five ingredients. Lightweight formulas, the ones that suit fine hair, lead with gentle surfactants and humectants like glycerin, and keep silicones, butters, and heavy oils out of the top ten. Heavy formulas put shea butter, coconut oil, or dimethicone high on the list, and those coat fine strands and cancel out any volumizing effect. The protein question matters too: hydrolyzed proteins in the formula add structure that helps fine hair hold volume, but too much protein without moisture balance makes hair stiff. If your volumizing routine falls flat by afternoon, the culprit is usually a heavy supporting product, not the shampoo. For the full thin-hair playbook, our thin dry hair guide covers volume, moisture, and styling together.
Seasonal Shampoo Swaps: Winter Dry Air Versus Summer Humidity
Humidity changes how shampoo formulas behave, and the seasonal swap is more specific than just going richer in winter. In summer, humidity is the problem: humectant-heavy formulas that worked in winter now pull water from the air into the hair, creating frizz and collapsing volume. The summer swap is a lighter wash with anti-humidity styling support, and less conditioner overall. Watch the dew point, not just the temperature, as your signal to swap. For dry-hair repair strategies that work across seasons, our best dry hair treatments guide covers repair, hydration, and shine restoration.