Beauty Moroccanoil Treatment Light Sizes Compared: Pick Your Size
The Moroccanoil Treatment Light in 3.4 fl oz and the 1.7 fl oz size hold the same famous formula. One is the value bottle for daily users, the other the compact pick for moderate use. We compared price per ounce, longevity, and best user.
| Factor | Moroccanoil Treatment Light, 3.4 Fl Oz | Moroccanoil Treatment Light, 1.7 Fl Oz |
|---|---|---|
| Product | Moroccanoil Treatment Light, 3.4 Fl Oz | Moroccanoil Treatment Light, 1.7 Fl Oz |
| Formula | Light argan oil for fine, light hair | Same Light formula |
| Value per ounce | Best value of the three sizes | Mid value |
| Lasts | 3 to 4 months of daily use | About 2 months of daily use |
| Best for | Daily users, long or thick blonde hair | Moderate users, short hair, small vanities |
| Travel friendly | No, full size | Better, compact bottle |
| Price tier | Prestige | Prestige |
| Our pick | Winner for daily value | Winner for compact use |
Our Verdict
Pick the 3.4 fl oz bottle if you use argan oil daily and want the best value. Pick the 1.7 fl oz if you use it a few times a week or want a smaller bottle. The travel size is for trips and first-time trials only.
More Top Picks in This Category
Not sold on either of these two? Here are more bestselling options worth considering.
Best for: trials and travel
Moroccanoil Treatment Light, Travel Size, 0.85 Fl Oz
- Carry-on friendly size
- Full Light formula inside
- Gym bag and purse ready
Pros
- Cheapest way to trial
- Perfect for travel
Cons
- Tiny for regular use
- Worst per-ounce value
Want the Full Picture?
Penetrating vs Sealing Oils: Which Job Moroccanoil Does
Hair oils divide into penetrating oils that enter the shaft (coconut, olive, avocado) and sealing oils that coat the surface (argan, jojoba, most silicones blends). Moroccanoil Treatment, built on argan oil, is primarily a sealing oil: it coats the cuticle, adds shine, reduces frizz, and locks in the moisture already present. It does not deeply penetrate like coconut oil does. This distinction determines when to use it: as a finisher and frizz-fighter on dry or damp hair, not as a deep pre-wash treatment where a penetrating oil would do more.
The porosity matching: low-porosity hair, which resists absorption, does best with sealing oils like argan; penetrating oils sit on low-porosity hair and feel greasy. High-porosity bleached blonde, the target user here, benefits from both: a penetrating oil as a pre-wash treatment to fill the porous shaft, then Moroccanoil as the sealing finisher to lock it in. Using only the sealer on very porous hair gives shine without substance; using only the penetrator gives substance without the polished finish.
The blonde-specific caution: pure oils are generally color-safe, but heavy oiling before sun exposure can accelerate lightening and dryness, since oil intensifies UV effects on the hair. Apply the sealing oil for the finished style, not as beach protection. Our baobab oil guide compares another sealing oil option.
How Much Oil by Hair Length: The Drop-Count Guide
Over-oiling is the number one Moroccanoil user error, and the drop counts by length prevent it. Short hair above the chin: 1 to 2 drops. Chin to shoulder: 2 to 3 drops. Shoulder to bra strap: 3 to 4 drops. Past bra strap: 4 to 6 drops. These are starting points; fine hair uses the lower end, thick hair the upper. The Light version compared here suits fine blonde hair specifically because the lower oil concentration reduces the weighed-down risk.
The application method multiplies the drop count's effectiveness. Warm the oil between the palms first, which thins it for even distribution. Apply to damp hair for styling (the water helps spread) or dry hair for finishing (more concentrated shine). Work from mid-lengths to ends first, then use the residual on the palms for the upper lengths; never apply the full amount directly to the roots.
The over-oiling rescue: if the hair looks greasy, do not rewash immediately. Dust a small amount of dry shampoo or translucent powder at the roots, which absorbs the excess, or run a boar bristle brush through to distribute the oil along the shaft. The next wash resets fully. Chronic over-oiling usually means the drop count needs halving, not that the product is wrong. The almond hair oil comparison gives drop counts for a lighter oil alternative.
Oiling for Fine Blonde Hair Without the Weighed-Down Next Day
Fine blonde hair and oil have a delicate relationship; the wrong approach leaves next-day hair flat and stringy. The fine-hair rules: use the Light formula, not the original; apply to damp ends only, never the roots or upper lengths; and use half the standard drop count to start. Fine hair shows oil faster because there is less hair mass to absorb it, so restraint is the entire strategy.
The timing trick for fine hair is night-before oiling on wash-eve: apply the oil to the ends before bed, let it absorb overnight, then wash in the morning. This gives the ends the treatment benefit with zero next-day weight, since the wash removes the surface excess. It is the fine-hair equivalent of a deep treatment without the heaviness.
The weighed-down next-day rescue and prevention: if morning hair looks flat, the oil went too high or too much was used; adjust placement lower and reduce drops. Dry shampoo at the roots lifts what the oil flattened. And remember that fine hair often needs oil only on the ends' last two inches; the "mid-lengths to ends" guidance assumes medium density. Our 7-in-1 oil comparison looks at blend options for fine hair.