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K18 Hair

All orders are processed and shipped within 3 business days. Our business hours are Monday&#x2013;Thursday, 9:00 AM&#x2013;5:00 PM and Friday 9:00AM-2:00PM PST. Orders placed on Fridays will typically ship by the following Tuesday unless Monday is a holiday.&#xA0;

All orders are processed and shipped within 3 business days. Our business hours are Monday–Thursday, 9:00 AM–5:00 PM and Friday 9:00AM-2:00PM PST. Orders placed on Fridays will typically ship by the following Tuesday unless Monday is a holiday.

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Shipping & Returns

What is the K18 leave-in molecular repair hair mask?

What are the K18 mask ingredients?

How does the K18 mask work?

Why should I use the K18 mask?

Will the K18 mask work for my hair?

Does the leave-in molecular repair mask need to be emulsified or activated?

How do I use the K18 mask?

How often do I use the K18 mask?

How much K18 mask do I use?

Can I use the K18 mask every day?

Can I use my K18 mask on day 2 hair?

Why skip conditioner?

Does K18 mask replace conditioner?

Why do I use K18 mask on towel-dried hair?

Can I mix the K18 mask with other styling products?

Can I apply styling products or conditioner before the mask's 4-minute wait time is up?

Will the K18 mask work on hair with a lot of buildup?

Why does the K18 mask have to sit for 4 minutes?

If the K18 mask doesn’t rinse out, why do I have to keep using it?

I'm not seeing results, or my hair feels dry, frizzy, and crunchy after using K18. What should I do?

Will the K18 mask weigh my hair down?

Is K18 considered a protein?

Why is there alcohol in the formula?

What if I have a wheat allergy?

Is K18 safe to use during pregnancy?

When should I expect to see results?

Does the K18 mask offer UV or heat protection?

What does the K18 mask smell like?

leave-in molecular repair hair mask

What is the molecular repair hair oil?

What does the molecular repair hair oil do?

How does the molecular repair hair oil fight frizz?

Does the molecular repair hair oil provide heat protection?

What oils are in this formula?

Does the molecular repair hair oil include the K18PEPTIDE™?

Can I use the oil on damp or dry hair?

Do I need frizzy hair to use the oil?

Does the molecular repair hair oil work on all hair types?

How do I apply this oil?

How do I use the oil with the K18 mask?

Do I need to wait 4 minutes after applying the oil?

Can I use the molecular repair hair oil on its own?

Can I use the molecular repair hair oil on keratin-treated hair?

Can I use this oil on extensions?

Can I use the molecular repair hair oil instead of the mask?

How do the molecular repair hair mask and oil work together?

Will the mask block the molecular repair hair oil from penetrating?

Can I mix the oil and mask together?

Can I use the oil immediately after the mask?

Can I do an overnight treatment with the molecular repair hair oil?

Is it better to use the full K18 routine?

Can I use this oil every day?

Will the molecular repair hair oil leave buildup or weigh down my hair?

Is the molecular repair hair oil vegan?

What does the oil smell like?

Is this molecular repair hair oil silicone-free?

Is this oil gluten-free?

Does this oil contain sulfates, parabens, or phthalates?

What are the molecular repair hair oil ingredients?

molecular repair hair oil

What is HeatBounce conditioning heat protectant?

What does HeatBounce do?

How does HeatBounce work?

Is there a professional size?

Does HeatBounce repair hair damage?

How does HeatBounce protect against heat?

What heat temperature does HeatBounce protect against?

Why does heat protection need to go so deep?

Does HeatBounce work on the inside and outside?

How does HeatBounce condition hair?

Does HeatBounce condition towel-dried and dry hair?

How is HeatBounce lightweight and conditioning?

Does HeatBounce detangle hair?

Does HeatBounce make hair easier to manage?

How do I use HeatBounce?

Where do I apply HeatBounce?

Is HeatBounce an aerosol product?

How much HeatBounce should I apply?

How often can I reapply HeatBounce?

Can I reapply HeatBounce every day?

How many applications do I get per bottle?

Is HeatBounce activated by heat (curling irons, flat irons, etc)

Can I use too much HeatBounce?

When do I use HeatBounce in my routine?

Is HeatBounce a styling product?

Can I use HeatBounce as a conditioning leave-in without heat?

Do I still need to apply a leave-in conditioner after HeatBounce?

Does HeatBounce protect against fading color or color shift?

How does HeatBounce protect against color shift and color fade?

Do I need to use HeatBounce on towel-dried and dried hair?

Will resilicore™ heat-shielding technology repel moisture to help maintain style?

Is the K18PEPTIDE™ in HeatBounce?

What does HeatBounce smell like?

What is resilicore™ heat-shielding technology?

Is HeatBounce safe for color-treated or chemically serviced hair?

Does HeatBounce contain sulfates, parabens, or phthalates?

Is HeatBounce a clean product?

Is HeatBounce cruelty-free and vegan?

Is HeatBounce plastic net-zero?

How is HeatBounce different from traditional heat protectants?

Do I have to wait for HeatBounce to activate before using heat?

Does HeatBounce work on all hair types?

Can I use HeatBounce on towel-dried hair?

Can I use HeatBounce on dry hair?

Can I use HeatBounce on wet hair?

What’s the difference between molecular repair hair oil and HeatBounce?

If the molecular repair hair oil already protects from heat, why do I need HeatBounce?

How do I use the molecular repair hair mask and HeatBounce in my routine?

Can I use HeatBounce immediately after the K18 mask?

Does HeatBounce hold my style?

Is HeatBounce a protein? Will it build up and over-protein hair?

What is the pH of HeatBounce?

Is HeatBounce gluten-free?

heatbounce conditioning heat protectant

What is AstroLift™ reparative volume spray?

What does AstroLift™ do?

How does AstroLift™ improve hair volume?

Do I need fine, fragile, and aging hair to use AstroLift™?

Does AstroLift™ work on all hair types?

Does AstroLift™ contain K18PEPTIDE™?

Do I have to wait 4 minutes after applying AstroLift™ for damage repair?

Will the reparative benefits also work on dry hair?

How do I get the most damage repair from AstroLift™?

If AstroLift™ repairs hair, do I still need the leave-in mask?

How do the molecular repair hair mask and AstroLift™ work together?

Will the molecular repair mask block the K18PEPTIDE™ in AstroLift™ from penetrating?

How does AstroLift™ work differently than traditional volume products?

Can I use AstroLift™ on towel-dried and dried hair?

Can I use AstroLift™ immediately after the K18 mask?

How do I use AstroLift™?

How much product should I apply?

How often can I reapply AstroLift™?

Can I reapply AstroLift™ every day?

Can I use this on towel-dried hair?

Can I use this on dry hair?

Do I need to activate AstroLift™ by blow drying?

Will AstroLift™ work with heat styling (curling irons, flat irons, etc.)

How do I use AstroLift™ between washes?

Will my volume and bounce wash away?

Will this cause buildup or white cast?

Does this leave behind residue or stickiness?

Can I use too much AstroLift™ reparative volume spray?

Will AstroLift™ reparative volume spray dry out my hair and scalp?

How is AstroLift™ reparative volume spray humidity-resistant?

Is AstroLift™ reparative volume spray safe for color or chemically treated hair?

Does AstroLift™ reparative volume spray protect from heat?

Is AstroLift™ reparative volume spray a styling product?

Does AstroLift™ reparative volume spray have silicones, sulfates, parabens, or phthalates?

Is AstroLift™ reparative volume spray an aerosol product?

What does AstroLift™ reparative volume spray smell like?

Can I use AstroLift™ reparative volume spray with hot tools?

Is AstroLift™ reparative volume spray good for thin/fine hair?

Does AstroLift™ reparative volume spray work for thick, flat hair?

What does “style memory” mean?

Will AstroLift™ reparative volume spray make my hair oily or weighed down?

Do I need to saturate hair to get volume or humidity benefits?

If AirWash™ gives me volume, why would I want to use AstroLift™ instead?

My volume falls flat after a few hours, what do I do?

How do I get the most volume with AstroLift™?

Is AstroLift™ vegan and cruelty-free?

Is AstroLift™ plastic net-zero?

When do I use it in my routine?

AstroLift™ reparative volume spray

What is AirWash™?

How do I use this product?

How often can I apply this product?

Can I use this on wet hair?

How does this fit into the K18 routine?

Do I have to wait 4 minutes after applying AirWash™?

Does this work well with other styling products?

Can I use this every day?

Can I apply to clean, dry hair after styling to keep my style longer lasting?

Can I use too much AirWash™?

Why does my hair feel gritty or powdery?

Will this dry out my hair and scalp?

Will AirWash™ clog my scalp’s pores?

How quickly does this absorb oil and odor?

Does my hair have to be dirty to use AirWash™?

Does AirWash™ work for all hair types and colors?

Is this a styling product?

I have a sensitive scalp, is this product for me?

Is this safe for color-treated or chemically serviced hair?

Does this product contain sulfates, parabens, or phthalates?

Does this contain any heat protectant?

Is this an aerosol product?

Why do I have to shake it well?

Is this safe to use on extensions?

Will this weigh my hair down?

What does it smell like?

This product applies wet, will it disturb my style?

Does AirWash™ contain the K18PEPTIDE™?

What is odorBIND™?

How does this absorb oil differently from traditional products?

Is this product considered clean?

Is this product vegan?

AirWash™ dry shampoo

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How quickly can you ship my items?Updated 16 days ago