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Olaplex No.7 bonding oil vs. K18 Molecular Repair hair oil

Olaplex No.7 bonding oil and K18 Molecular Repair hair oil are used to add shine to the hair, protect the hair from heat during hair styling, and reduce breakage and split ends. What are the pros and cons of each of these two products?

Olaplex No.7 bonding oil

Pros:

  • Heat protectant
  • Vegan and cruelty-free
  • Free of parabens and phthalates
  • For all hair types

Key ingredients:

  • Dimethicone Isohexadecane Phenyl Trimethicone (type of silicone) to hydrate and coat the hair strands
  • Bis-Aminopropyl Diglycol Dimaleate
  • Plant oils: Zea Mays (Corn) Oil, Helianthus Annuus (Sunflower) Seed Oil, Moringa Oleifera Seed Oil, Punica Granatum Seed Oil
  • Morinda Citrifolia Fruit Powder, Eclipta Prostrata Extract, Melia Azadirachta Leaf Extract
  • Camellia Sinensis (green tea)

Cons:

  • Contains silicone
  • Contains artificial fragrance (perfume) that can cause skin irritation and allergy
  • Does not provide medical support

Full ingredients:

Dimethicone, Isohexadecane, C13-14 Isoparaffin, Coco-Caprylate, Phenyl Trimethicone, Bis-Aminopropyl Diglycol Dimaleate, Propanediol, Zea Mays (Corn) Oil, Beta-Carotene, Helianthus Annuus (Sunflower) Seed Oil, Moringa Oleifera Seed Oil, Punica Granatum Seed Oil, Water (Aqua/Eau), Morinda Citrifolia Fruit Powder, Fragrance (Parfum), Hexyl Cinnamal, Eclipta Prostrata Extract, Ethylhexyl Methoxycinnamate, Limonene, Tocopherol, Citral, Linalool, Melia Azadirachta Leaf Extract, Citronellol, Pseudozyma Epicola/Camellia Sinensis Seed Oil Ferment Extract Filtrate

Application:

Remove cap. Turn the bottle upside down and gently tap to dispense a metered drop. Apply a small amount to damp or dry hair, and style as desired. Re-apply lightly before re-styling dry hair between washes. It can be used daily on wet and dry hair or before styling with heat.

Cost:

$30/ 30ml

K18 Molecular Repair hair oil

Pros:

  • Heat protectant
  • Silicon-free
  • Free of parabens and phthalates
  • For all hair types

Key ingredients:

  • Oligopeptide-78
  • Avocado oil: Hydrates and nourishes the hair
  • Sunflower Oil: Contains fatty acids to help improve hair health
  • Cyclomethicone, Dimethicone (type of silicone)

Cons:

  • Contains Benzyl Alcohol
  • Includes artificial fragrance (perfume) and limonene that can cause skin irritation and allergy

Full ingredients:

Caprylyl Caprylate/Caprate, Squalane, Persea Gratissima (Avocado) Oil, Helianthus Annuus (Sunflower) Oil, C13-15 Alkane, Undecane, Benzyl Alcohol, Tridecane, Castor Isostearate Succinate, Propanediol, sh-Oligopeptide-78, Fragrance (Parfum), Tocopherol, Cinnamal, Hexyl Cinnamal, Limonene, Linalool

Application:

Apply to damp, towel-dried hair before styling or on dry hair as a finisher. Highly concentrated formula. Start with 1-3 drops and build as needed.

Cost:

$68/Bottle (30ml)

The alternative:

MDhair Peptide Bond Repair Oil



Pros:

  • Helps restore and revive frizzy, brittle, damaged hair
  • Increases shine, softness, and color vibrancy
  • Uses active peptides to help strengthen your hair
  • Heat protectant
  • Silicon-free, alcohol-free
  • Vegan
  • Sulfate-free, fragrance-free, and color-safe
  • Dermatologist formulated and tested
  • For all hair types

Key ingredients:

  • Myristoyl Pentapeptide-17: An amino acid chain that enhances hair strand health and reduces hair breakage.
  • Tripeptides, Tetrapeptides, and Hexapeptides: These short amino acid strings are proteins' building blocks. They help restore the inner bonding of hair, making it thicker and stronger.
  • Argan and Avocado Oil: Provide a protective layer to the hair and scalp that prevents dryness, reduces frizziness, and boosts shine.
  • Macadamia Seed Oil: A silicone alternative that provides a silky texture, which mimics hair's lipid content and increases shine.
  • Sunflower Seed Oil: Packed with oleic acid, these natural oils coat the hair strands and help stop breakage and split ends.
  • Castor Oil: Helps protect your hair from heat, hydrate your strands, and keep the hair PH balanced, reducing frizz and split ends.
  • Tocopherol (Vitamin E): A potent antioxidant that helps reduce oxidative stress and free radicals to protect hair strands from UV and other environmental damage.
  • Soybean Oil: Keeps your hair hydrated, making it soft and shiny. It is also rich in omega fatty acids and vitamin E, making it ideal for damaged, dry, and color-treated hair.
  • Glycerin: A humectant that absorbs moisture from the air, keeping hair hydrated and healthy.

Cons:

Best used in combination with MDhair shampoo and supplements

Application:

Apply a few drops to dry or damp hair, focusing on mid-length to ends or other areas of damage. Thin hair: 1-2 drops. Thick, frizzy, and curly hair: 2-3 drops. Coily hair: 3-4 drops per section. It can be used daily or before styling with heat.

Cost:

$18/Bottle

Full ingredients:

Glycine Max (Soybean) Oil, Glycerin, Macadamia Ternifolia Seed Oil, Avocado Oil, Ethylhexyl Palmitate, Helianthus Annuus (Sunflower) Seed Oil, Ricinus Communis (Castor) Oil, Aqua, Camellia Japonica Leaf Extract, Tocopheryl Acetate, Myristoyl Pentapeptide-17, Hexapeptide-9, Tripeptide-1, Palmitoyl Tripeptide-1, Palmitoyl Tripeptide-5, Palmitoyl Tetrapeptide-7, Palmitoyl Pentapeptide-4, Argania Spinosa (Argan) Oil, Limonia Acidissima Bark Extract, Caprylic/Capric Triglyceride, Isononyl Isononanoate, Ethylhexyl Salicylate, Linalool, Gardenia Oil, Ethylhexylglycerin, CI 12700

MDhair Peptide Bond Repair Oil vs. Olaplex No.7 bonding oil vs. Moroccan oil


Olaplex No. 7 bonding oil
MDhair Peptide Bond Repair Oil
K18 Molecular Repair hair oil

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