Everything You Need to Know About Using 40 Volume Developer Safely

Everything You Need to Know About Using 40 Volume Developer Safely

When it comes to lightening hair or achieving high-lift hair color, the strength of the developer you choose can make all the difference. For many, a 40-volume developer is an effective solution, especially when aiming to go several shades lighter or trying to lift very dark hair. However, using 40-volume developer safely is essential, as it’s one of the strongest options available. In this blog, we’ll cover everything you need to know about using 40-volume developer, so you can achieve your desired results without damaging your hair.

What Is a 40 Volume Developer?

A 40-volume developer is a hair product that contains hydrogen peroxide, an oxidizing agent that lifts hair color. This volume strength is one of the highest available for at-home or professional hair color applications and is typically used for dramatic color changes or to lighten hair several levels in a single session.

40-volume developers, like the Keywest Professional Silver Sand Developer, contain 12% hydrogen peroxide. This concentration allows it to open the hair cuticle more aggressively, lifting natural pigments and making it an ideal choice for significant lightening or bleaching.

When to Use 40 Volume Developer

Using 40-volume developer isn’t necessary for every hair coloring process. It’s typically chosen for:

  • Lightening dark hair: Those with dark brown or black hair may need 40-volume developer to achieve lighter shades in one session.
  • Creating high-lift blonde shades: When aiming for platinum blonde or other very light shades, a 40-volume developer can help you reach the desired level of lightness.
  • Removing stubborn pigment: Sometimes, deep hair pigments require a stronger developer to break down effectively.

Important Note:

Avoid using 40-volume developer if you only want a subtle change in color or if your hair is fine, fragile, or already chemically treated, as it can be too harsh and may lead to breakage.

Benefits of Using a 40 Volume Developer

Using a 40-volume developer has specific benefits, especially if your goal is to achieve a dramatic transformation. Here’s how it can help:

  1. Provides Maximum Lift: 40-volume developer offers one of the highest lift potentials, allowing for a noticeable change in hair color in just one application.
  2. Effective on Dark Hair: For those with naturally dark hair, a 40-volume developer can help you achieve vibrant, lighter colors without multiple applications.
  3. Reduces Time Needed for Lightening: Since it’s strong, you may only need a single session rather than multiple rounds, reducing the time spent lightening hair overall.

Risks of Using a 40 Volume Developer

With its strength, a 40-volume developer comes with risks that must be managed carefully. Here are some key considerations:

  • Potential for Damage: High peroxide levels can be tough on hair, potentially causing breakage, dryness, and split ends if not used correctly.
  • Increased Sensitivity: Scalp irritation or burns can occur if applied too close to the scalp or left on too long.
  • Uneven Results: If not applied evenly or left on for an inconsistent amount of time, you may experience patchy color or inconsistent lightening.

Tips for Safe Use of 40 Volume Developer

Let’s talk about the essentials of how to use 40-volume developer safely for hair lightening. The following tips will help you achieve effective results while minimizing potential damage:

1. Do a Strand Test First

Always do a strand test before using 40-volume developer on your entire head. This test will help you gauge how long to leave the developer on, what shade you’ll achieve, and whether your hair can handle the product without damage. Select a small, hidden strand, apply the developer, and check the results after 10–15 minutes.

2. Mix with the Right Product

When using 40-volume developer, it’s typically mixed with bleach or a high-lift hair color. Following the recommended ratios on the bleach or hair color packaging is essential. Typically, the mix ratio is 1:2 (one part bleach or color to two parts developer), but it may vary depending on the brand.

If you’re using a high-quality developer like the Keywest Professional Silver Sand Developer, be sure to follow the product’s specific instructions for optimal results.

3. Apply Away from the Scalp

To reduce the risk of scalp burns or irritation, avoid applying 40-volume developer directly to the scalp. Instead, start an inch away from the roots, applying the mixture to the mid-lengths and ends first, then gradually working up toward the roots if needed.

4. Monitor Processing Time Carefully

40-volume developer should not be left on your hair for more than 30 minutes. Generally, a processing time of 10–20 minutes is enough to achieve a lift without causing excessive damage. Check the hair frequently to monitor the color lift, and rinse thoroughly when the desired shade is achieved.

5. Deep Condition After Use

Bleaching and high-lift processes can strip hair of moisture, so it’s essential to follow up with a good-quality deep conditioner or hair mask. Look for products enriched with ingredients like keratin, pro-vitamin B5, or argan oil to restore hydration, like the Pro-Vitamin B5 contained in the Keywest Professional Silver Sand Developer.

FAQs About Using 40 Volume Developer Safely

1. Is 40 volume developer safe for sensitive or fine hair?

Generally, no. If your hair is sensitive, fine, or damaged, using 40-volume developer can be too harsh and may cause significant damage. It’s better to opt for a 20 or 30-volume developer in these cases.

2. Can you use 40 volume developer safely for at-home hair bleaching?

Yes, but it requires careful application and monitoring. If you’re a beginner, consider using a lower-volume developer or consult a professional. Misusing 40-volume developer can lead to serious damage, including breakage and scalp burns.

3. What precautions should I take when using 40 volume developer for highlights?

If you’re doing highlights, be cautious about sectioning the hair carefully to avoid overlapping. Use foils or highlight caps to isolate the sections being lightened, and always start with the tips first, working your way up.

4. How should I mix 40 volume developer with bleach for maximum hair lift with minimal damage?

Mix the bleach and developer according to package instructions, typically in a 1:2 ratio. Using high-quality products, such as Keywest Professional Silver Sand Developer, can help ensure a balanced formula that maximizes lift while minimizing damage.

5. Is it possible to use 40 volume developer to lighten previously colored hair?

While 40-volume developer can lighten previously colored hair, it may lead to unpredictable results due to the artificial pigments in dyed hair. Often, a professional color correction service is recommended for lightening previously dyed hair safely.

Alternatives to 40 Volume Developer

If 40-volume developer sounds too intense for your hair, here are some alternatives:

  • 30 Volume Developer: This is slightly less intense but still offers significant lift, making it suitable for those who want to go lighter without as much risk.
  • 20 Volume Developer: Ideal for slight lightening or toning, this strength is gentler and less likely to cause damage.
  • 10 Volume Developer: Mostly used for depositing color rather than lifting, making it suitable for toning or covering gray hair.

Final Thoughts on Using 40 Volume Developer Safely

A 40-volume developer can be an incredibly effective tool in achieving the hair transformation you want, but it requires careful handling and preparation. From doing a strand test to applying away from the scalp and monitoring processing time carefully, taking these steps can help you achieve the look you desire with minimal damage. For best results, consider a trusted product like Keywest Professional Silver Sand Developer, which combines the power of a 40-volume developer with pro-vitamin B5 to help nourish your hair during the lightening process.

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