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Sebastian

Sebastian Dark Oil Lightweight Hair Mask

  • Smooth and shine hair mask
  • Jojoba and argan oils
  • Lightweight finish
  • Dark Oil signature scent
  • Size not listed in the bullets

Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A smoothing mask that nourishes without the heavy feel many masks leave, scented to match the Dark Oil line. Size, directions and ingredients are not stated, so check the jar before buying.

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ASIN: B0GM3G738FCategory: Hair Masks

Overview

Not a dense, heavy treatment, the Sebastian Dark Oil mask is a lightweight smoothing mask built on jojoba and argan oils. It nourishes and adds shine, then rinses out leaving hair soft rather than weighed down.

Nourishment that does not flatten hair is the reason to use it, and it slots into a Dark Oil routine. The fragrance is a strong part of the line. Jar size, leave-in time and full ingredients are missing.

Who it's for

Normal to slightly dry hair that wants shine and softness without heaviness is the target. Severely damaged or bleached hair needs a stronger repair mask.

Pros and cons

Pros
  • Lightweight for a mask
  • Jojoba and argan oils
  • Adds smoothness and shine
  • Matches the Dark Oil line
Cons
  • Size not listed
  • No directions given
  • Ingredient list missing
  • Fragrance may not suit sensitive users

Performance notes

Smoothing comes from oils coating the cuticle, so even distribution on damp hair matters more than quantity. Rinse thoroughly to keep the light finish. Hair that is very porous may need longer on the hair.

Specifications

BrandSebastian
Special IngredientsJojoba oil, argan oil
Scent NameDark Oil signature scent
Hair Conditioner TypeHair mask
Product BenefitsSmoothing, shine, nourishment, lightweight feel

Frequently asked questions

Is the Sebastian Dark Oil mask heavy?

No. It is described as leaving hair nourished and surprisingly lightweight.

Is the Sebastian Dark Oil mask a protein treatment?

The listing describes an oil-infused smoothing and shine mask, not a protein treatment.