FAQs

Application l General FAQ of all Bigen products


A1. All permanent hair colours including Bigen require a skin allergy test before each use. Body constitution and condition are changing every day. Allergic reaction occurs depending on the constitution of the day of use. Please make sure that you do a skin allergy test before each use, even if you have been colouring for years without any problems.

You should carry out the test following the instructions provided 48 hours before application to see if you are allergic to hair colour product or not, every time you colour your hair with permanent hair colour product. If you notice any signs of burning, swelling, redness or irritation on your skin, do not use the product.

A2. We recommend choosing the colour number that the colour is closed to your initial hair colour, or the lighter colour number.

A3. You should be able to colour your hair as it is. However, if your hair is exposed to excessive hair styling product build up, please shampoo the day before application. If your hair has excessive hair styling product build up or is very oily, you should rinse your hair to be able to obtain the desired colour. Hair styling products and oily hair may prevent the colour from penetrating into hair shaft.

A4. No, hair colour should be applied to dry hair. Water will affect the colouring process, and desired result may not be obtained if you apply on your wet hair.

A5. You may not obtain the desired hair colour if you apply on hair that has recently been coloured by henna. This is because the colours from henna are left in your hair, and if the colours of BIGEN products and the colours of henna are mixed the results may not be as they were desired. The time it takes for the colours of henna to completely come out differs from person to person, therefore we recommend you to wait until new hair has grown in or to cut the coloured areas. Also, please do the skin allergy test before each application.

A6. Please refrain from colouring your hair while taking a bath or shower. It is dangerous because the sweat and steam may cause the mixture to drip into the eyes.

A7. Children have more sensitive scalp than adults and the natural barrier function is also weaker due to less secretion of oils, prone to allergic reaction. Therefore, you are recommended not to use hair colour or bleach on children.

A8. Changes in your hormonal balance when you are having your period or pregnant can make the skin more sensitive, increasing the possibility that you will experience skin irritation. On the other hand, if you decide to use a hair colour product during pregnancy, there will be no negative effects on the child.

Facts l General FAQ of all Bigen products


A1. No. You can only save the unmixed powder or cream. The unused mixture has to be thrown away after the application.

A2. No. It is not recommended to mix colours. Mixing hair colour is not like mixing paint. The result will not be in between the colours you mix, and also cannot be predicted how it would come out.

A3. No. Colour pigments of permanent hair colour – once oxidized and developed espacially dark colour – are difficult to remove from hair. Say, it is almost impossible to lighten previously darkened hair with permanent hair colour by yourself. In such case, it is recommended to ask for a professional service at a salon.

Long lasting colours l General FAQ of all Bigen products


A1. The shampoo used should be mild acid shampoo. Ingredient in hair colour working as pH adjuster balances the mixture to alkali, in order to maximize the colouring effect. The pH status of coloured hair(Alkali) should be offset to the original status of hair, that is mild acid. This is why mild acid shampoo is recommended.

A2. It is recommended to use hair care products for colour treated hair. Nutrition and pH adjuster are contained in these products. They prevent colour fading, return pH status of coloured hair(alkali) to original status(mild acid). In addition, oil, cationic polymer, nutrition such as vegetable extracts and protein give moisture to hair.

A3. How long the colours last depends on your aftercare especially caring a week after colouring is important. The protein substance and colourants come out of cuticles easily especially after colouring, because hair is towards alkalinity and cuticles are opened. If hair is damaged, the colours do not last long.

For long lasting colours, you are recommended to use shampoo and conditioner for coloured hair. Those products have features such as: “rinsing away dirt without damaging the hair”, “working on damaged areas to minimize damage to the hair” and “protection against colour fading”.

Please note that some alkaline shampoos (anti-dundruff shampoo) will cause the hair colour to fade.

A4. Please wait at least one week after your last application. If the interval between applications is less than 1 week, you hair or scalp may be damaged. For covering grey, we recommend retouch/touch-up once a month, because hair grows 1-1.5cm a month and the difference of the coloured area and root area can be seen.

A5. Perm your hair first.
Try to have your hair permed at least one week before colouring your hair. If you perm your hair after colouring, the colour might fade. However, the process of colouring may loosen the curls, so please consult a hair dresser beforehand.

How to avoid/treat stain l General FAQ of all Bigen products


A1. During application, please cover your body with a towel or cape and wear gloves to avoid stains, because it is hard to remove. We also advise you to wear something that the stains will not stand out. In case any mixture gets on your clothes, please wash it with water immediately because it is hard to remove the stains as times go by.

A2. Removing from the nails: polish the nail using toothpaste and a dry towel. Stain on the skin will generally be removed within 2 to 3 days by the skin’s metabolism if you take a bath or shower every day.

Removing from the skin: quickly apply a make-up cleanser to the area and gently massage the area for 3-5 minutes. Next press a hot towel on the area for 5 minutes to steam and then clean the area with bar soap. Rubbing the area with soap on a towel is also effective, but do not rub too strongly or you will damage the skin.

A3. If the shampooing is not sufficiently done after application and your hair is wet, the colour pigments that are left on the surface of your hair come out and stain your pillowcase. Therefore, please shampoo your hair well (recommended twice), apply conditioner and dry your hair thoroughly before you sleep. Please be careful for about a week because colours may transfer onto clothes and pillowcases after sweating a lot while playing sports, getting wet because of rain, and using hair tonic.

A4. In reality there is no way to remove stains from the area for materials that absorb the mixture like wooden floors, carpet, tatami mats, wallpaper and leather. We recommend putting down some newspapers to protect against spills.

If the mixture falls onto plastic flooring, quickly wipe up the mixture and wash the area with a neutral detergent. If the area has already been stained, the stain can be removed with diluted chlorine bleach on an absorbent cotton, however, this may damage the wooden floor material and cause the colour to change.