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Hair Extension Aftercare


Do not wash hair up to 48 hours after initial application of extensions (micro-ring and micro-ring weft excluded); allow up to two weeks to become comfortable with hair extensions.

Extensions may be painful or uncomfortable the first few days.

Before washing, brush all tangles out using gentle strokes. Brush hair from the root down with a recommended hair extension brush up to three to four times daily.

Do not leave bonds wet for long periods of time. After being in a pool, hot tub, body of water, or any other chemically treated water, wash thoroughly with a PH balanced formula – colours and quality of hair may be altered depending on the chemical make-up of water treatment systems. Hair extensions are not recommended for use in chlorinated water, salt water, and hard water with a high mineral content or in hotter climates than normally accustomed to as damage or discolouration can occur.

We recommend pulling hair back into a loose braid with a soft hair tie when going to sleep to prevent tangling/matting.

Only use extension products prescribed by your hair extension technician. Do not use any over the counter chemicals such as; perm solution, permanent or semi-permanent hair colour, shampoos that contain sulfate, or any products not approved by the technician/salon.

Do not apply any oil-based products directly to the bond, instead hydrate hair mid-shaft down with serums and/or oils.

When styling with hot tools, avoid heat to the bond.

DO NOT USE natural and organic shampoo and conditioners.



Scheduled maintenance appointments are recommended depending on the condition of your extensions and natural hair.

If you have any questions/concerns during the duration of the install, please contact Costello Beauty Studio

Costello Beauty Studio is not responsible for any colour change/damage done to the hair if Blue/Purple/Silver or toning shampoo is used.

Extensions MUST be removed professionally (recommended to be removed at Costello Beauty, as our products work together) and that if they are not maintained/removed in a timely manner, it is solely your responsibility for the end result of your natural hair.



Kerastase - Extensioniste Line

Unite - 7 Seconds Leave In

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