Dyeing 613 bundles, which are typically made from blonde human hair, requires special care to achieve the desired color without damaging the hair. Here's a step-by-step guide on how to dye 613 bundles:

1. Prepare the Hair:
- Start with clean and dry 613 bundles. Make sure there are no products, oils, or residues on the hair.
- Detangle the hair gently using a wide-tooth comb to ensure even application.

2. Choose the Right Hair Dye:
- Use a high-quality hair dye specifically formulated for human hair extensions. Opt for a professional-grade hair dye to achieve the best results.

3. Perform a Strand Test:
- Before dyeing the entire bundle, perform a strand test on a small section of the hair to determine the final color and processing time.

4. Mix the Hair Dye:
- Follow the instructions provided with the hair dye to mix the color and developer in the correct proportions.

5. Apply the Dye:
- Put on gloves to protect your hands.
- Section the hair into manageable parts and apply the hair dye evenly to each section, starting from the top and working your way down to the ends.
- Use a color brush or applicator bottle for precise application.

6. Process the Hair:
- Cover the dyed hair with a plastic cap or wrap it in plastic wrap to trap heat and help the color process evenly.
- Follow the recommended processing time mentioned in the hair dye instructions.

7. Rinse and Condition:
- Rinse the hair thoroughly with cool water until the water runs clear.
- Apply a deep conditioner or hair mask to restore moisture and nourish the hair after dyeing.

8. Air Dry:
- Let the hair bundles air dry on a wig stand or mannequin head to maintain their shape and prevent heat damage.

Important Tips:
- Avoid using bleach or high-lift dyes on 613 bundles, as they can cause damage and weaken the hair.
- Always perform a patch test before dyeing to check for any adverse reactions.
- If you're unsure about dyeing the hair yourself, consider seeking professional help from a hairstylist experienced in working with human hair extensions.

By following these steps and taking proper precautions, you can dye your 613 bundles successfully and achieve your desired hair color without compromising the hair's quality. Remember that dyeing human hair requires careful attention to detail to maintain its natural beauty and integrity.