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How to dye a full head of short dark hair to platinum blonde background
Expert guide to dye a full head of short, shaggy hair from dark brown to light blonde hair
How to dye a full head of short dark hair to platinum blonde

Going platinum?

We love blonde shag cuts, as does everyone from Miley Cyrus and Troye Sivan to Suki Waterhouse and Lady Gaga. If you're thinking of joining the club and want to make the jump from dark brown to light blonde, we can talk you through exactly how to dye short shaggy hair platinum blonde safely and properly. Whether you're a total rookie or bleach veteran, it’s always worth refreshing your memory on how to dye it just right, keeping your hair healthy and happy so you can colour with confidence, to blonde and beyond!

How to dye short shaggy virgin hair
48 hours before bleaching

You must perform a strand test to check the condition of your hair and how it will look and feel after bleaching. Click here for our strand and skin sensitivity test guide.

Read all the instructions included in your Bleach Kit. Check the timings for your hair shape and texture.

Get prepped! Lay out your products and familiarise yourself with them. See our toolkit below. 

Don’t wash your hair for 48 hours prior to bleaching as the natural hair oils help to protect the scalp.

Set aside 30 mins - 1.5 hours for the process.

Step 1: Section Hair

Use a comb to centre-part your hair. Then, part the left side from in front of your ear up to the centre-parting and secure it with a crocodile clip or hair tie. Repeat on the right hand side so your hair is divided into four neat, secure quarters. The top of your head should look like a hot cross bun.

Step 2: Mix bleach powder and developing lotion

Cut open the bleach packet and pour its contents into a non-metallic bowl. Add the developing lotion and use a non-metallic spoon to mix them together into a smooth, creamy texture.

TOP TIP: Only mix when you’re ready to start. Mixed bleach can expand in the bowl, so do it just before you begin.

Step 3: Slice and apply

Begin at the front of your head. Use the end of the comb to slice out the first section of hair above your right ear. The slice should be a very thin sliver of hair, about 2cm wide.

Starting 2cm from your scalp, paint the bleach mixture liberally onto the lengths and ends of your hair using the tint brush to coat every strand.

Step 4: Apply bleach to mids and ends

Slice out the next section of hair and apply the bleach to your mids and ends. Repeat this throughout the front and then the back of your head until the mids and ends of your hair are completely coated in the bleach.

Step 5: Smooth!

Gently smoosh the bleach in to your lengths and ends at the front as you work through your hair.

SMOOSH DEFINITION: Gently massage the product in, applying more as you go to cover every strand.

Step 6: Scrape test

A scrape test helps you check the colour and condition of your hair during the bleaching process.

Let the bleach develop on the mids and ends of each quarter of your hair for 20-40 minutes or until the hair has visibly lightened. Use the end of the comb to gently scrape the bleach away from your hair and check it has lightened enough.

Top tip: If the hair feels gummy, overly stretchy or snaps then you should rinse immediately.

Step 7: Apply bleach to roots

Once the mids and ends in the first quarter of your hair have turned pale yellow, you're ready to apply bleach to the roots.

Start with the first quarter at the front again and paint the bleach mixture onto your roots at the crown using your tint brush.

Step 8: Slice and apply to roots

Slice hair out in small sections from the crown and apply bleach to your roots throughout the first quarter, followed by the second quarter.

Step 9: Bleach baby and neck hairs

After your roots at the front are covered in bleach, paint the mixture on to the fine strands around your hairline. Once the front of your head is covered in bleach, set a timer for either 30 minutes or 45 minutes, depending on your hair shape, texture and the results of your strand test.

Step 10: Develop Time

How long you can leave the bleach on for depends on your hair shape and the thickness of individual hair strands.

If you have coily hair, or fine hair that's straight, wavy or curly, it will likely process more quickly, so don't leave the bleach on your roots for longer than 20-30 mins per quarter.

We recommend checking the hair every ten minutes with a scrape test. If you have thick hair strands that are straight, wavy or curly, your hair needs more processing time, so you can leave the bleach on your roots for up to 45 mins per quarter. 

Conduct a scrape test to check your hair after 20 mins and then again after 40 mins.

Step 11: Scrape test, again

After your hair at the front has developed for the recommended amount of time, use the comb to gently scrape the bleach away from your roots to check the hair has lightened enough. Then rinse the front of your head until the water runs clear.

Repeat the scrape test at the back of your head after your second timer goes off. Then rinse until the water runs clear.

Step 12: Rinse and shampoo

Shampoo and rinse your freshly bleached hair twice. We recommend smooshing Alex Plex through and leaving for 5-10 minutes to strengthen your locks. Rinse and you're ready to tone!

Step 13: Mix Toner

Break the colourant tube’s seal using its lid and unscrew the top of the developing lotion bottle. Screw the lid back on and shake well until the two products are completely mixed together.

TOP TIP: Only mix when you’re ready to start. You should use your toner immediately, so mix just before you begin.

Step 14: Apply toner to roots

Loosely section your hair into four quarters. Use the toner bottle to apply the mixture to your roots at the front, then the back of your head. Use the nozzle to slice through the quarters and apply more toner to the roots through your whole head.

Step 15: Smoosh!

Gently smoosh the toner in as you go, adding more product to make sure every strand is well covered.

Step 16: Apply toner to mids and ends

Use the toner bottle to apply toner to the roots all over your head. Use the nozzle to lift sections and apply more to the roots throughout.

Step 17: Develop time

Once all your hair is covered with toner and smooshed in, let it develop for 20 minutes.

Step 18: Rinse and condition

Rinse your hair with cool water until it runs clear, then condition and rinse again to finish the toning process.

Step 19: Apply Colour to mids and ends

Loosely section your hair into four. Then, liberally paint colour onto the mids and ends of your hair in each quarter section using your hands or tint brush. Make sure every strand is coated in product!

Step 20: Apply colour to roots

Now apply the colour to your roots in each quarter section. When your roots are done, paint the colour onto the fine strands around your hairline.

Step 21: Smoosh!

Smoosh the colour into your hair from roots to tip, applying more as you go to make sure every strand is covered in product.

Step 22: Rinse

After your colour's developed, rinse your hair with cool water and gently towel dry.

Step 23: Maintain your look

To prolong the life of your look, use a toning shampoo and conditioner every other wash to deposit colour on to bleached hair and maintain or build your preferred shade.

Step 24: Aftercare

Keep hair healthy and colour locked in with a weekly dose of ultra-nourishing Reincarnation Mask. For dry ends, stroke through our silky, hydrating Hair Elixir.

Products used in this guide:

Hair Inspo @BLEACHLONDON

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