Beauty Kevin Murphy Maxi Wash vs Plumping Wash: Big Shampoo Duel
The Kevin Murphy Maxi Wash and the Kevin Murphy Plumping Wash are the two most distinct washes in the lineup. One detoxes and resets, the other densifies and volumizes. We compared their purposes, ingredients, and ideal users.
| Factor | Kevin Murphy Maxi Wash Detox Shampoo, 8. | Kevin Murphy Plumping Wash Densifying Sh |
|---|---|---|
| Product | Kevin Murphy Maxi Wash, 8.4 oz | Kevin Murphy Plumping Wash, 8.4 oz |
| Main job | Detox and buildup removal | Densifying and volumizing |
| Key ingredients | Fruit acids, balancing essential oils | Ginger root, nettle extracts |
| Use frequency | Weekly reset | Daily |
| Best for | Oily, flaky, buildup-prone scalps | Fine, thinning hair |
| Free from | Sulphates, parabens | Sulphates, parabens |
| Price tier | Premium salon | Premium salon |
| Our pick | Winner for detox | Winner for volume |
Our Verdict
Pick Maxi Wash for a weekly detox that resets scalp and removes buildup. Pick Plumping Wash for daily densifying care of fine or thinning hair. Many scalps benefit from using both in rotation.
More Top Picks in This Category
Not sold on either of these two? Here are more bestselling options worth considering.
Best for: damaged frizzy hair
Kevin Murphy Repair-Me Wash Shampoo, 8.4 oz
- Green pea protein repair
- Hydrating frizz control
- Sulphate free
Pros
- Repairs while cleansing
- Good for damaged hair
Cons
- Premium price
- Rich for oily scalps
Want the Full Picture?
Clarifying vs Chelating vs Detox: Three Different Jobs
Every brand uses these words interchangeably, but they describe different chemistry for different buildup. Clarifying shampoos use strong surfactants to strip product buildup, silicones, oils, and styling residue. Chelating shampoos use binding agents like disodium EDTA or phytic acid to grab mineral deposits from hard water, calcium, magnesium, iron, and lift them off the hair. Detox shampoos are a marketing term that usually means a clarifying formula with charcoal or clay added, effective on product gunk but not necessarily on minerals.
The Maxi Wash in this comparison is a detox-style clarifier, excellent at resetting product-heavy hair. But if your problem is hard water film, a true chelating formula does the job better, check the ingredient list for EDTA or phytic acid high up. Buying a detox shampoo for mineral buildup is the most common mismatch, the hair feels coated no matter how often you "clarify" because the minerals are untouched. Diagnose your buildup first: waxy, coated feeling with normal water points to product, while dullness, brass that will not tone, and stiffness point to minerals. The Malibu C Un-Do-Goo guide covers a chelating-leaning formula for the hard water case.
Clarifying Before Salon Services: The Timing
Colorists love freshly clarified hair, but timing matters and nobody gives specifics. Before a color appointment, clarify two to three days ahead, not the morning of. This removes the buildup barrier so color deposits evenly, while giving your scalp time to rebuild its natural oils, which protect against color irritation. Clarifying the same day strips those protective oils and can make the color process sting.
Keratin treatments have the opposite rule. Most keratin systems require clarifying immediately before application, often with the salon's own clarifier, because the treatment needs completely bare hair to bond. After a keratin treatment, avoid clarifying shampoos entirely for the life of the treatment, they strip it fast, use sulfate-free gentle shampoo only. Before a perm, clarify two days ahead like color. The Plumping Wash in this comparison is not a clarifier at all, it is a densifying daily shampoo, so do not use it as your pre-color reset, that job belongs to the Maxi Wash or a dedicated clarifier.
Scalp-Only Clarifying: Protecting Dry Ends
The classic clarifying complaint is that roots feel amazing while ends feel like straw. The fix is scalp-only application, and the technique is simple. Before shampooing, work a light conditioner through your mid-lengths and ends, this creates a barrier so the clarifier cannot strip the already-dry lengths. Then apply the clarifying shampoo only to the scalp, massaging with fingertips, and let the rinse carry it down the lengths, that brief contact is enough to clean without stripping.
This technique matters most for curly, color-treated, or long hair, where the ends are always drier than the roots. It also stretches the time between deep clarifying sessions because you are not punishing your ends each time. Follow every clarifying wash with a proper conditioning or masking step, clarifying opens the cuticle and the follow-up seals it back down. Skipping conditioner after clarifying is how people conclude clarifying "damaged" their hair, the clarifier did its job, the missing conditioner was the problem. The OUAI detox comparison covers another detox formula where this technique applies.
When Clarifying Goes Wrong: The Recovery Protocol
Hair that feels straw-like, tangly, or squeaky after clarifying is over-clarified, and the recovery depends on what is missing. If the hair feels rough and brittle, it needs moisture, use a deep hydrating mask for twenty minutes with heat from a shower cap. If it feels mushy and stretchy when wet, it needs protein, a protein mask or treatment restores structure. Most over-clarified hair needs moisture first, protein second, in that order.
Recovery timeline: one proper masking session fixes most cases, severely stripped hair may need two sessions across two wash days. During recovery, skip all clarifying and use only gentle shampoo. To prevent recurrence, the issue is usually frequency, not the product, most hair needs clarifying every two to four weeks, not weekly. If you clarified weekly and your hair rebelled, that was the schedule failing, not the shampoo. The apple cider vinegar rinse guide covers a gentler natural alternative for between-session maintenance.