John Masters Defrizzer vs Murumuru Leave In: Frizz Duel

Natural frizz shoppers usually compare the John Masters defrizzer with the Natura murumuru leave in. We compared them directly. One is the cleanest formula, the other is the simplest one step smoother.
| Factor | John Masters Organics Nourishing Defrizz | Natura Murumuru Leave-In |
|---|---|---|
| Price point | Check price | Check price |
| Formula style | Organic plant oils | Murumuru butter base |
| Application | Damp hair, targeted | Damp hair, mid to ends |
| Best hair type | All, label readers | Curly, wavy |
| Scent | Herbal, natural | Light, buttery |
| Silicone free | Yes | Yes |
Our Verdict
Pick the John Masters defrizzer for the cleanest organic formula. Pick the murumuru leave in for the simplest one step frizz control.
More Top Picks in This Category
Not sold on either of these two? Here are more bestselling options worth considering.

Best for: Stubborn frizz needing a full matched routine
My Way Hair DNA Frizz Control Set
- Multi step set
- Matched formulas
- Frizz focused system
Pros
- Done for you routine
- Steps build on each other
- Fair per product cost
Cons
- Higher upfront cost
- Less natural than others

Best for: Budget frizz control that works
Not Your Mother's Smooth Moves set
- Drugstore set
- Frizz smoothing formulas
- Easy to find
Pros
- Lowest price here
- Effective smoothing
- Good starter set
Cons
- Less natural formula
- Scent is stronger
Want the Full Picture?
The Correct Layering Order: Serum, Oil, and Heat Protectant
Product order determines whether each layer works or just sits on top of the previous one, so follow the thin-to-thick rule. The full morning sequence runs: leave-in conditioner on damp hair first, then heat protectant spray, then serum, then a small amount of oil last to seal. Each layer needs a minute to absorb before the next goes on; stacking everything at once creates the pilling and separation people blame on individual products. John Masters Organics belongs in the serum slot, after water-based leave-ins and before oils, because oils applied first would block the serum from reaching the hair. Night routine simplifies to serum or oil on dry lengths, with scalp serums applied to a clean dry scalp before bed.
Two combinations deserve caution. Layering a silicone-heavy serum under a silicone-heavy oil daily builds up fast, so schedule a clarifying wash to match the load. And never layer scalp actives like strong exfoliants directly under minoxidil or other topicals without checking irritation stacking; alternate them to different days if the scalp protests. When a routine stops delivering, simplify back to fewer layers before buying more products, because overload is the more common problem than deficiency. For more options in this category, see our Wavy Hair Frizz Guide: Causes, Fixes, and Smooth Routines.
Silicone Serums: Is the Buildup Fear Justified?
Judge silicones by behavior, not reputation. In serums they deliver the smoothness, frizz control, and heat buffering that make products like John Masters Organics effective, and the buildup concern has a simple answer: clarify periodically. Coated, limp-feeling hair between washes is the diagnostic signal, and a clarifying session resets it completely. Most serum-grade silicones wash out with ordinary shampoo; only the heaviest varieties demand sulfate-level cleansing. Fear of the ingredient list causes more bad purchases than the ingredient itself.
For buyers committed to avoiding silicones, workable options exist but require label diligence. Look for serums built on natural oils, esters, and hemisqualane rather than anything ending in -cone or -xane. Curly-method adherents should note that silicone-free does not automatically mean lightweight; some oil-based silicone-free serums weigh down fine curls more than a light dimethicone formula would. Choose by hair response rather than ideology, and clarify on a schedule matched to whatever you actually use. The complete buying guide is our Wavy Hair Serum Guide: Frizz Control Without Flat Waves.
Penetrating vs Sealing Oils: Which Type Your Hair Needs
Hair oils split into two functional families, and using the wrong one explains many disappointing results. Penetrating oils, led by coconut oil, actually enter the hair shaft and reduce protein loss during washing, which makes them ideal as pre-wash treatments. Sealing oils like argan, jojoba, and most commercial blends sit on the surface, smoothing the cuticle and locking in moisture without entering. John Masters Organics should be judged on which job it does: a penetrating oil applied to dry hair before washing protects from within, while a sealing oil belongs on damp or dry lengths after washing to add shine and control frizz.
Let porosity set your oil strategy. Bleached or high-porosity hair absorbs penetrating oils eagerly and then needs a sealing layer to hold the gains, so the two-step sequence pays off most there. Low-porosity hair repels penetration, making heavy pre-wash oiling a greasy waste, while a whisper of sealing oil on damp ends delivers visible smoothness. Hair that ends up both oily and frizzy after oiling is the classic sign of the wrong oil type for the job. For a direct comparison of more products, see our complete hair care buying guide.
Spotting Silicone Buildup vs Dryness
Silicone buildup from conditioner is widely blamed and rarely diagnosed correctly, so learn the distinction. True buildup feels coated, looks dull despite conditioning, and makes hair go limp faster after washing; dryness feels rough, tangles easily, and looks frizzy. The silicones most likely to accumulate are the heavy non-water-soluble types, while lighter ones like dimethicone rinse out with regular shampoo for most people. John Masters Organics can be checked on its ingredient list: silicones near the top in a daily conditioner deserve more attention than the same ingredients in an occasional mask.
The fix is a clarifying wash, not conditioner-switching panic. One clarifying session strips the silicone layers and reveals the hair's true state underneath; if it feels dry after clarifying, you had buildup masking dryness, and if it feels great, buildup was the whole problem. Going forward, match clarifying frequency to silicone load: daily silicone conditioner users clarify every few weeks, while occasional users may never need to. Sulfate-free shampoo handles light silicones fine, so only the heaviest formulas demand stronger cleansing.