Sebastian Professional - Dark Oil - Lightweight Mask |16.9 oz|
Estimate delivery times: 2-3 days.
Return within 30 days of purchase.
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Return Policy
Love It or Return It – Prohair’s Hassle-Free Return Policy
We want you to love every purchase from Prohair.ca. If not, no worries — we've made returns as easy and transparent as possible.
Return Window: 14-Day Guarantee
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You have 14 days from the delivery date to return any item for any reason.
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Products must be unused, in original condition and packaging.
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Returns of used or opened items are not accepted due to hygiene standards.
How to Initiate a Return
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No need to contact us!
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Simply log in to your Prohair.ca account, visit your order history, and select the item(s) to return.
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Print the return label and ship it back to us.
Note: Returns must be shipped within Canada.
Who Pays Return Shipping?
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If you're returning an item for personal reasons, the return shipping cost is yours to cover.
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If we made a mistake (wrong item, damaged item, etc.), we’ll cover the full cost, including shipping.
Non-Returnable Items Due to hygiene and safety reasons, we cannot accept returns on:
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Hair extensions
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Shavers, clippers & clipper blades
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Used shears or skin-contact tools
Gifts, Promotions & Freebies
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Items received as part of a promotion must be returned with the original order.
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Free promotional items cannot be returned alone.
Refunds
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All refunds go back to the original payment method.
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Please allow 5–7 business days after we receive your return to process the refund.
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Shipping fees are only refunded if the return is due to an error on our end.
In-Store Purchases
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Items bought in-store must be returned to a physical location — not by mail.
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Return with your receipt within 14 days for a full refund.
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No receipt? We'll offer store credit at the item's lowest sale price within the past 30 days.
Need Help?
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Visit our Returns & Exchanges page.
Pro tip: Keep your return tracking number — we can’t process a return without proof of delivery!
Infographic suggestions to go with this text on your Returns page:
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Timeline Bar: Showing "Order Received → 14 Days → Return Deadline"
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3-Step Return Process: (1) Log in → (2) Click return → (3) Ship it back
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Who Pays What: Side-by-side chart ("Your Choice" vs "Our Mistake")
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Checklist Visual: What’s accepted: New, Sealed — What’s not: Used, Opened
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Refund Clock: 5–7 Days to Process
Guaranteed Safe Checkout

Sebastian Professional - Dark Oil - Lightweight Mask |16.9 oz|
Shampoo hair and rinse. Towel dry hair to remove excess water and distribute through hair. Leave hair mask on for 2-5 mins. Rinse thoroughly.For best results you can mix 2 drops of Dark Oil in your mask for added moisture.For 3x smoother hair we recommend to use Dark Oil Lightweight Mask in combination with Dark Oil Lightweight Shampoo, Dark Oil and Dark Oil Fragrant Mist.All types.Dark Oil fragrance
Benefit
- With Jojoba and Argan Oil
- Professional lightweight hair conditioner
- Smoothes and detangles hair while keeping it lightweight and full of body
- For all hair types
- Nourishes hair with a special blend of oils for shine
Ingredients Specification
Package Height 3.29 in
Package Length/Depth 4.25 in
Package Width 4.25 in
Package Weight 54.33 grams Product Weight 0.555 kilograms
Aqua/Water/Eau, Stearyl Alcohol, Behentrimonium Chloride, Cetyl Alcohol, Parfum/Fragrance, Panthenol, Isopropyl Alcohol, Benzyl Alcohol, Phenoxyethanol, PEG-2M, Methylparaben, Propylene Glycol, Quaternium-80, Propylparaben, Disodium EDTA, Hexyl Cinnamal, Coumarin, Citronellol, Silica, Citric Acid, Argania Spinosa Kernel Oil, Simmondsia Chinensis (Jojoba) Seed Oil, BHT
About The Brand
Sebastian Professional provides stylists with new products, tools and techniques, simplifying and solving the challenges hairdressers face every day. Sebastian is the inventor of the crimping iron, first semi-permanent, ammonia-free hair colour Cellophanes, first wet gel, as well as first combined hair care and styling Potion 9. Sebastian Professional was founded by LA stylist Geri Cusenza on the principle of fearlessness. A thirst for innovation and desire to change the game have always been Sebastian’s raison d’être. Sebastian inspires the artist inside every stylist with new techniques, providing new professional styling and hair care products for new-to-the-eye looks.