Argan Oil vs Castor Oil: Hair Growth vs Length Retention
Argan Oil vs Castor Oil: Hair Growth vs Length Retention
Castor oil for hair growth supports scalp circulation and follicle health, helping improve growth conditions, while argan oil for hair growth strengthens hair strands and reduces breakage to support length retention. Castor oil works at the scalp, and argan oil protects the hair shaft. A complete hair growth oil routine requires both growth and retention support.
Why Argan Oil and Castor Oil Are Often Confused
Argan oil and castor oil are among the most searched natural hair growth oils, yet they are commonly misunderstood. Many people expect one oil to solve every hair concern, but hair length depends on two separate processes:
- Hair growth (what the scalp produces)
- Length retention (what stays on your head)
Using the wrong oil for the wrong goal leads to slow results, breakage, or scalp buildup.
For a deeper explanation of how oils influence follicles, see
Internal link: How Hair Growth Oils Actually Work
Hair Growth vs Length Retention
What Hair Growth Means
Hair growth begins inside the scalp at the follicle. It depends on:
- Blood circulation
- Scalp inflammation control
- Moisture balance
- Follicle health
- Length of the anagen (growth) phase
A hair growth oil does not create new follicles, but it can improve the environment follicles need to function optimally.
Learn more: Best Hair Growth Oils for Thinning Hair
What Length Retention Means
Length retention determines how much hair stays on your head after it grows. It depends on:
- Strand strength
- Elasticity
- Moisture retention
- Protection from friction and heat
Hair that doesn’t break appears to grow faster, even if growth speed stays the same.
Learn more: How to Prevent Breakage and Retain Length Naturally

How Castor Oil Supports Hair Growth
Castor oil is one of the most popular natural hair growth oils, especially for thinning areas and slow regrowth.
How Castor Oil for Hair Growth Works
Castor oil contains ricinoleic acid, which helps:
- Improve scalp circulation
- Support follicle function
- Reduce dryness-related scalp irritation
- Create a protective barrier over the scalp
This makes castor oil effective for scalp-based hair growth support, not strand repair.
What Castor Oil Does Not Do
- It does not instantly regrow hair
- It does not override genetics or hormones
- It does not work better when applied heavily
Overuse can slow progress.
How Argan Oil Supports Hair Growth Through Retention
Although argan oil does not stimulate follicles, argan oil for hair growth is essential for keeping the length you grow.
Why Argan Oil Improves Hair Growth Results
Argan oil helps by:
- Strengthening the hair shaft
- Improving elasticity
- Reducing friction and split ends
- Sealing moisture into strands
When breakage decreases, length accumulates — which is why argan oil is often associated with growth.
What Argan Oil Cannot Do
Argan oil cannot:
- Activate dormant follicles
- Improve scalp circulation
- Regrow thinning areas
For scalp-related hair loss, it must be paired with a true hair growth oil.
Hair Growth Oil Strategy: Growth + Retention Together
Most failed hair routines rely on one oil to do everything, which often creates imbalance.
- Only castor oil → buildup, dry ends, and breakage
- Only argan oil → protected strands but slow scalp growth
The most effective natural hair growth oil routine separates roles instead of forcing one oil to perform every function.
What Actually Works
-
Growth-focused oils for the scalp
Oils like castor oil support scalp conditions linked to healthy hair growth, including moisture balance and follicle support. -
Lightweight oils for length protection
Oils like argan oil strengthen the hair shaft, improve elasticity, and reduce breakage so length is retained.

Why Combination Hair Growth Oils Are More Effective
Well-formulated combination hair growth oils include both castor oil and argan oil to address growth and retention at the same time.
Seddy Hair Growth Oil, for example, combines castor oil for scalp support with argan oil for strand protection, allowing it to:
- Support follicle health without clogging pores
- Reduce breakage while hair grows
- Deliver balanced results without relying on multiple products
By including both castor and argan oil in a single formula, combination oils help simplify routines while supporting long-term hair growth consistency.
Learn more: How to Build a Hair Growth Oil Routine That Works
Argan Oil vs Castor Oil Comparison
|
Feature |
Argan Oil |
Castor Oil |
|
Primary function |
Length retention |
Hair growth support |
|
Best for scalp |
Light support |
Yes |
|
Best for strands |
Excellent |
Too heavy |
|
Texture |
Lightweight |
Thick |
|
Buildup risk |
Low |
High |
|
Ideal placement |
Mid-lengths & ends |
Scalp (sparingly) |
When Castor Oil for Hair Growth Causes Problems
Overuse may:
- Clog follicles
- Trap buildup
- Increase shedding
- Irritate the scalp
When Argan Oil for Hair Growth Isn’t Enough
Argan oil alone cannot fix:
- Thinning edges
- Scalp-related shedding
- Slow regrowth
How to Use Argan Oil and Castor Oil Together
For best results:
- Castor oil → scalp (small, targeted amounts)
- Argan oil → mid-lengths and ends
- Avoid heavy layering
- Cleanse the scalp regularly
Frequently Asked Questions
Which oil is better for hair growth?
Castor oil supports scalp-based hair growth; argan oil supports length retention.
Can argan oil regrow hair?
No, but it prevents breakage so hair can grow longer.
Is castor oil too heavy for daily use?
Yes, daily heavy use may clog follicles.
Can I mix argan and castor oil?
Yes, balanced formulas work best.
Do I need both oils for real growth?
Yes. Growth and retention must work together.
Final Takeaway
There is no single best hair growth oil.
- Castor oil for hair growth improves scalp and follicle conditions
- Argan oil for hair growth protects strands and prevents breakage
The most effective natural hair growth oil routine uses both oils — each in its proper role — to support healthy growth and long-term length retention.



