Free delivery from €59 (FR) and €99 (BE+LU+ES+IT+NL+PT)
Fast shipping within 24h *
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Free delivery from €59 (FR) and €99 (BE+LU+ES+IT+NL+PT)
Fast shipping within 24h *
PayPal Payment
Lower 24h EXPRESS rates for faster, more affordable delivery
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Lower 24h EXPRESS rates for faster, more affordable delivery
🚀 🚀 🚀
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Find answers here to the most frequently asked questions about choosing products, using them, delivery, payment and after-sales service.
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Hair diagnostic, hair type, ingredients and desired result.
How do I know which straightening treatment is best for my hair?
The right choice depends on your hair texture, chemical history (colouring, bleaching, previous straightening treatments), current condition and desired result.
Start with our free diagnostic. If you are unsure or your hair is damaged, contact our expert on WhatsApp at +33 7 80 93 09 30.
Is the Paris Liss diagnostic free?
Yes. The diagnostic is free and there is no obligation to purchase. It helps identify the most suitable solution based on your answers.
Does the diagnostic replace a strand test?
No. The diagnostic helps guide your choice, but a strand test is still essential on highlighted, bleached or damaged hair, or hair that has undergone several chemical treatments.
Do your straightening treatments contain formaldehyde?
No. The products sold by Paris Liss are formaldehyde-free and contain no formaldehyde derivatives.
Do your products contain glyoxylic acid?
Ingredients vary depending on the product. Always check the INCI list and the information on the product page before ordering.
Salvatore Blue Gold is one option that does not contain glyoxylic acid. If you are unsure, contact our expert before purchasing.
Can I use a straightening treatment on coloured, highlighted or bleached hair?
Yes, provided that the product, processing time, straightener temperature and number of passes are adapted accordingly. A strand test is essential.
For personalised advice, take the free diagnostic, then contact our expert on WhatsApp if necessary.
Can I use a straightening treatment on very damaged or stretchy hair?
When hair is very damaged, brittle or stretchy, repair should be the priority before any transformation. An unsuitable straightening treatment can weaken the hair fibre further.
Start with the free diagnostic and ask our expert for advice before applying any treatment.
What is the difference between Silk Express and Top One?
Silk Express is designed for a faster protocol. Top One is a protein straightening treatment particularly suited to thick, curly, voluminous or hard-to-manage hair.
The best choice mainly depends on the condition of your hair and your desired result: take the free diagnostic before ordering.
What is a toning treatment used for?
A toning treatment helps neutralise yellow and orange tones, especially on light, blonde, coloured or bleached hair. It acts like a toner and can improve shine and softness.
What is the difference between a straightening treatment and hair BTX?
A straightening treatment is designed to smooth and tame the hair fibre. Hair BTX is primarily a care treatment: it helps nourish and repair the hair, reduce frizz and may slightly relax the hair without being a straightening treatment.
Will my hair be 100% straight after the treatment?
The result depends on your natural texture, the condition of your hair, the product chosen and the protocol used. Some hair will mainly become more manageable, softer and less voluminous.
Can a straightening treatment be used during pregnancy or breastfeeding?
As a precaution, ask your healthcare professional for advice before using a straightening product during pregnancy or breastfeeding.
Precautions, protocols, temperature and aftercare following a straightening treatment.
Are the products suitable for home use?
Our products are primarily intended for professionals and experienced users. Incorrect application, temperature, quantity or rinsing technique can affect the result.
Should I always do a strand test?
Yes, especially on coloured, highlighted, bleached, porous or damaged hair, or hair that has already undergone a chemical treatment.
What precautions should I take during application?
Wear gloves, work in a well-ventilated area, avoid contact with the scalp and never apply the product to an irritated or injured scalp. Follow the protocol provided on the product page.
What temperature should I use for straightening?
As a general guide: 180–200°C for fine or sensitised hair, 210–220°C for normal hair, and up to 230°C for thick, resistant hair. Always adjust the temperature after carrying out a strand test.
Should I use a clarifying shampoo before straightening?
It depends on the product chosen. Some protocols require a clarifying shampoo, while others are faster. Always check the protocol on the relevant product page.
Should I rinse the product before using the straightener?
It depends on the straightening treatment chosen. Rinsing may be partial or complete depending on the product: follow only the instructions on the relevant product page or protocol.
Where can I find a product’s instructions or protocol?
The main instructions are provided in the detailed description on each product page. If you have a technical question, contact our expert before application.
How should I care for my hair after straightening?
To help prolong the result, use a sulphate-free shampoo, a nourishing mask and heat protection before using heated styling tools.
How long do the results of a straightening treatment last?
How long the result lasts varies depending on the product, your hair type, washing frequency and home care routine. Check the chosen product page for specific guidance.
How many applications can I get from a 1 L size?
The number of applications depends greatly on hair length, thickness and density, as well as the amount of product used. Check the chosen product page for its estimated yield.
Delivery times, tracking, parcels, returns and order changes.
From what order value is delivery free?
Delivery is free on orders over €59 in mainland France and over €99 in eligible countries: Belgium, Luxembourg, Spain, Italy, the Netherlands and Portugal.
How long does order preparation take?
Orders placed before 7pm are generally prepared and dispatched on the next working day, except during busy periods.
What delivery methods and times are available?
For standard delivery, Mondial Relay pickup-point delivery generally takes 3 to 7 working days. For express home delivery, allow around 1 to 2 working days after dispatch, excluding any carrier delays.
How can I track my order?
Use your order number on our tracking page, or use the tracking number received by email. Remember to check your spam or junk folder.
My parcel is marked as delivered, but I haven’t received it. What should I do?
Check your letterbox, address, neighbours, building concierge and pickup point. If the problem persists, contact us with your order number and tracking number so we can investigate.
My parcel is damaged. What should I do?
If the parcel is visibly damaged, refuse it at the pickup point or with the carrier. Then contact us promptly with photos of the box, shipping label and affected products.
An item is missing or I received the wrong product. What should I do?
Do not use the affected product. Contact us as soon as possible with your order number and photos of the parcel, the contents received and the delivery note.
I didn’t collect my parcel in time. What happens next?
The parcel will be returned to our warehouse. Contact us as soon as possible and we will explain the available options, including possible reshipment at your expense.
Can I return a product?
Yes, within 14 days, provided the product has not been opened, used or damaged and is returned in its original packaging.
How will I be refunded after an accepted return?
Once the return has been accepted, the refund is issued to the payment method used for the order.
Can I change or cancel my order?
Contact us as soon as possible after your purchase. If the order has not yet been prepared or dispatched, we will do our best to help. Once it has been dispatched, changes or cancellation are generally no longer possible.
I forgot my promo code. Can I add it after payment?
Promo codes normally need to be applied before payment. Contact us quickly and we will check your order, but adding a code after the order has been confirmed cannot be guaranteed.
Secure payment, equipment warranty and customer service contact.
Is payment on Paris Liss secure?
Yes. Payments are secured with SSL encryption. You can pay by bank card or PayPal, depending on the options available at checkout.
Is payment in 4 instalments available?
Interest-free payment in 4 instalments is available through PayPal, subject to eligibility and approval by PayPal.
Can I receive an invoice?
Yes. Documents relating to your order are sent by email. Remember to check your junk or spam folder if you cannot find them.
What is the warranty on electrical appliances?
Large electrical appliances come with a 1-year warranty. Small electrical appliances, including Nano Guns, come with a 6-month warranty.
In the event of a fault, contact customer service with your order number and a video showing the issue.
Do you have a loyalty programme?
Yes. You earn points with every purchase through our loyalty programme. These points can then be used to receive discounts on future orders.
Do you have a physical store?
Paris Liss is an online store. Collection in person may occasionally be possible depending on availability: please contact us on WhatsApp beforehand.
How can I contact Paris Liss?
For questions about an order, email contact@parisliss.com.
For advice on choosing a straightening treatment, hair care product or protocol, contact our expert on WhatsApp at +33 7 80 93 09 30 or take the free diagnostic.
NOT SURE BEFORE ORDERING?
Answer a few questions and get guidance based on your hair type, hair history and desired result.
Free delivery
On orders over €59 in France and €99 in Belgium
Secure payments
We use SSL encryption for secure payments
Fast dispatch
Dispatch within 24h* / Delivery: Express 24–48h or Standard 3–7 days
Customer service 7 days a week
10am–7pm Monday to Friday. 12pm–5pm on weekends
Free delivery*
Secure payment
Fast shipping*
Customer service 7 days a week
* Livraison offerte en relais Mondial Relay dès 59 € (FR) et 99 € (UE)
* Expédition sous 24h hors périodes de forte affluence.
