Side by side
Najeau Sunday Scalp Mask vs TGIN Jamaican Black Castor Oil Growth Serum
10 of 10 functions match Formula overlap 28%. Najeau Sunday Scalp Mask and TGIN Jamaican Black Castor Oil Growth Serum share 1 ingredient among each other's most prominent.
Which of these fits your hair?
We check your pattern, moisture need, scalp, fragrance tolerance, weight sensitivity and more against each formula — and say which one lines up.
Your profile at a glance
- Your answers appear here
- Your answers appear here
- Your answers appear here
- Your answers appear here
When each one is the right call
What each formula is built for, from its own ingredient list.
- Sunday Scalp Mask — fragrance-free
- Jamaican Black Castor Oil Growth Serum — protein-sensitive hair
Side by side
Every trait, aligned
One row per trait, read from each product’s own ingredient list and record. A dash means we have not researched that field for that product — it is not a “no”.
Compared at different sizes — 4 oz against 1.69 oz. Per-ounce prices favour the larger bottle.
- Fragrance-freeno fragrance (parfum) on the label — scented
- Protein-sensitive hairthat stiffens when protein is added
- Coarse or dry hairthat absorbs everything you give it
- Silicone-free routinesno silicones appear in the list
- Protein-sensitive hairthat stiffens when protein is added
- Coarse or dry hairthat absorbs everything you give it
- Silicone-free routinesno silicones appear in the list
- Very dry hairno fast-drying alcohol in the list
- Scents bother youthis product carries a scent
- Oily scalp or fine hairthat gets weighed down
- Tight budgetsit sits in the upper price tiers
- Scents bother youthis product carries a scent
- Oily scalp or fine hairthat gets weighed down
- Picking it up locallywe have it recorded in one channel only
More facts about each one
- sulfate-free
- silicone-free
- fragrance-free
- protein-free
- curly-method compatible
- sulfate-free
- silicone-free
- protein-free
- curly-method compatible
Facts as we recorded them. A dash means we have not researched that field for that product — it is not a "no".
The bottom line
The bottom line depends on your hair
Which of these two suits you is a question about your hair, not about them. The consultation answers it — and tells you what your routine needs around it.
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The detail behind the table
Where the readings above come from: the ingredient lists themselves, each brand’s claims checked against them, what owners report, and cost per ounce in context.
Shared and distinct ingredients
Shared and distinct ingredients
Computed from the ingredient lists as printed. "Shared" means both lists carry it; where it sits on each label is stated, because position is what tells you how much.
What both formulas carry
What only one of them carries
Sunday Scalp Mask
- Olea Europaea (Olive) Oil
- Arctium Lappa Fruit Extract
- Pimpinella Anisum Oil
- Melaleuca Alternifolia (Tea Tree) Leaf Oil
Jamaican Black Castor Oil Growth Serum
Full ingredient list — Sunday Scalp Mask (5)
-
1
Olea Europaea (Olive) Oil
- oil
- emollient
-
2
Arctium Lappa Fruit Extract
- botanical extract
-
3
Ricinus Communis (Castor) Seed Oil
- oil
- emollient
-
4
Pimpinella Anisum Oil
- essential oil
- oil
- Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
5
Melaleuca Alternifolia (Tea Tree) Leaf Oil
- botanical extract
- essential oil
- fragrance
Full ingredient list — Jamaican Black Castor Oil Growth Serum (5)
-
1
Ricinus Communis (Castor) Seed Oil
- oil
- emollient
-
2
Cocos Nucifera (Coconut) Oil
- oil
- emollient
-
3
Prunus Persica (Peach) Kernel Oil
- oil
- emollient
- Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
4
Fragrance
- fragrance
- declared fragrance
-
5
Biotin
- vitamin
Claims check
What each brand says, against what each formula shows
Claims are quoted from each brand. We only mark one supported, partly supported, or conflicting when that product’s ingredient list actually speaks to it.
Sunday Scalp Mask
An exfoliating oil cleanser for the scalp
Stated by brandCan’t be confirmed from label.A weekly exfoliating pre-shampoo scalp oil treatment that helps lift away dead skin, excess sebum, and stubborn buildup for a deeper scalp reset
Potential conflictLikely to weigh hair down.helps lift away dead skin, excess sebum, and stubborn buildup
Potential conflictLikely to weigh hair down.leaves the scalp feeling clarified and refreshed
Potential conflictToo gentle for real build-up.Your scalp's weekly reset
Stated by brandCan’t be confirmed from label.Clears Scalp Buildup
Stated by brandCan’t be confirmed from label.Calms and comforts the scalp
Stated by brandCan’t be confirmed from label.Supports Fuller Growth
Stated by brandNot something a label can show.
Jamaican Black Castor Oil Growth Serum
reduces frizz and flyaways
Stated by brandMay help, but not a primary focus.promotes hair growth
Stated by brandNot something a label can show.hydrates dry strands and seals moisture
SupportedHelps hair feel hydrated.free from harsh sulfates, parabens, lanolin, artificial colors and petrolatum
SupportedGentler on colour and coils.
Price check
Cost per ounce, in context
Cost per ounce against every product of this type we have priced, each at the size it is most often sold in. Value labels are computed from that percentile and from how many products that do the same job cost less; they are comparisons, not judgements about a brand.
$3.14/oz vs $23.20/oz — Najeau Sunday Scalp Mask costs about 7.4× more per ounce than TGIN Jamaican Black Castor Oil Growth Serum.
Every mark sits on one distribution because these are compared against the same set: 154 scalp treatments with a computable unit price.
Computed from cost per ounce against every product of this type we have priced, and from how many products that do the same job cost less. It is a comparison, not a judgement about the brand.
Compare with something else
Close formulas to each of these, as their own comparison pages.
Sunday Scalp Mask · Jamaican Black Castor Oil Growth Serum · All scalp treatments in the library
How this page was made
- This page is assembled from the same researched records the individual product pages render: identity, each ingredient list as printed, each brand's own claims, dated price observations, and review themes written in our researchers' own words. Nothing on it is written per comparison.
- We do not rank these against each other. Which of them suits you depends on your hair, and that is what the consultation works out.
- The formula similarity percentage is a stored, precomputed number: position-weighted overlap of the two ingredient lists blended with agreement on the attributes we derive. It measures how alike two formulas are, not how well either works.
- The value band is a fixed label over two stored numbers: this product’s cost per ounce as a percentile of every product of this type we have priced, each at the size it is most often sold in, and how many products we score as doing the same job cost at least a quarter less per ounce.
- The "Is this right for you?" panel reads only your own consultation answers, and it applies exactly the filters our recommendation engine applies. It is computed when you load the page and is never stored on it.
- 9 sources were consulted across the products on this page.
- Ingredient order tells you relative amount only above roughly 1%. Prices are observations on the dates shown and change without notice. We do not sell these products and take no placement fees.
- This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.
Still unsure? Take your consultation or browse more products.
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