Chat with us
👋 Any questions?
Please text us at
(833) 400-3868

A Comprehensive Guide On How To Apply Onion Juice On Hair

UPGUYS > Blog > Hair > A Comprehensive Guide on How to Apply Onion Juice on Hair
The person who wrote this article

Written by the UPGUYS Editorial Team
Published on August 20, 2023

Are you tired of trying countless hair growth remedies without seeing any significant results? Look no further, because we have the answer you've been searching for – onion juice! Yes, you heard it right – onion juice! This humble kitchen ingredient is packed with powerful nutrients that can rejuvenate your hair follicles and promote hair growth.

In this comprehensive guide, we will dive deep into the science of hair growth and explore how onion juice can unlock the secrets to luscious locks. So, get ready to discover the amazing benefits of onion juice for hair and learn how to apply it to your hair for maximum effectiveness.

Topics covered in this article:

Understanding the Science of Hair Growth

Before we delve into the wonders of onion juice, it's essential to understand the science behind hair growth. Our hair goes through a natural growth cycle, consisting of three phases: anagen, catagen, and telogen.

The anagen phase is the active growth phase, where hair follicles produce new cells and push out hair strands from the scalp. This phase can last for several years, and the length of this phase determines the length of our hair.

During the anagen phase, the hair follicles are in a constant state of activity. They receive nourishment from the blood vessels in the scalp, which provide the necessary nutrients for hair growth. The hair shaft, composed of keratinized cells, is formed and pushed out of the scalp, replacing the old hair strand.

The catagen phase is a transitional phase that lasts for a few weeks. It is a period of rest and renewal for the hair follicles. During this phase, the hair follicles shrink and detach from the blood supply, preparing for the next phase.

While the catagen phase may seem uneventful, it is a crucial part of the hair growth cycle. During this phase, the hair follicles undergo structural changes, reorganizing themselves to prepare for the growth phase. This process ensures that the new hair strands will be healthy and strong.

The telogen phase is the resting phase, which lasts for around three months. During this phase, the old hair strand falls out, making way for new hair to grow in its place. It is completely normal to shed around 50-100 hairs per day during this phase.

At any given time, around 85% of our hair is in the anagen phase, 1-2% in the catagen phase, and 10-15% in the telogen phase. This balance ensures that there is a continuous cycle of hair growth and renewal.

UPGUYS productBuy Minoxidil AM/PM from Canada

Factors Affecting Hair Growth

Several factors influence the speed and quality of hair growth. Genetics, hormonal imbalances, nutritional deficiencies, and environmental factors can all play a role in hair health. By understanding these factors, we can take steps to optimize hair growth and prevent hair loss.

Genetics plays a significant role in determining our hair growth patterns. The genes we inherit from our parents determine the thickness, color, and texture of our hair. While we cannot change our genetic makeup, understanding our genetic predispositions can help us make informed decisions about hair care.

Hormonal imbalances can disrupt the hair growth cycle. Conditions such as polycystic ovary syndrome (PCOS) and thyroid disorders can lead to excessive hair shedding or slow hair growth. Maintaining hormonal balance through proper medical care and lifestyle choices can promote healthy hair growth.

Proper nutrition is essential for healthy hair growth. A diet rich in vitamins, minerals, and proteins provides the necessary building blocks for strong and vibrant hair. Nutritional deficiencies, such as iron deficiency or inadequate protein intake, can lead to hair loss and slow hair growth. Including a variety of nutrient-dense foods in our diet can support optimal hair health.

Environmental factors, such as exposure to pollutants, harsh chemicals, and excessive heat, can damage the hair shaft and hinder its growth. Protecting our hair from these external stressors and adopting gentle hair care practices can promote healthy hair growth.

Common Hair Growth Myths Debunked

Before we proceed, let's debunk some common hair growth myths. Contrary to popular belief, cutting your hair does not make it grow faster. Trimming the split ends helps improve the overall appearance of your hair, but it doesn't affect its growth rate. The growth of hair occurs at the root, not at the ends.

Additionally, massaging your scalp vigorously does not stimulate hair growth. While gentle scalp massages can improve blood circulation, they won't magically make your hair grow longer overnight. Hair growth is a complex process that involves various biological factors, and a simple massage cannot override these mechanisms.

Understanding the science behind hair growth is crucial for anyone seeking to improve their hair health. By knowing the different phases of the hair growth cycle and the factors that influence it, we can make informed decisions about our hair care routine and promote optimal hair growth.

Read moreNatural Ways To Promote Hair Regrowth

The Power of Onion Juice for Hair Growth

Now, let's talk about the star ingredient of this comprehensive guide: onion juice. Onion juice is a natural remedy that has been used for centuries to promote hair growth. It's rich in sulfur, which is essential for the production of collagen – a key protein for hair growth. Furthermore, onion juice contains antioxidants that protect hair follicles from damage and encourage healthy hair growth.

The Nutritional Composition of Onion Juice

Onion juice is not only packed with sulfur but also contains vitamins A, C, and E, which are crucial for maintaining strong and healthy hair. These vitamins nourish the scalp and stimulate hair follicles, leading to improved hair growth.

How Onion Juice Promotes Hair Growth

When applied to the scalp, onion juice penetrates the hair follicles and delivers its rich nutrients directly to the roots. This helps strengthen the hair shaft, prevent breakage, and stimulate hair growth. Additionally, the sulfur in onion juice improves blood circulation in the scalp, ensuring that the hair follicles receive an adequate supply of nutrients and oxygen for optimal growth.

Read moreUnveiling Side Effects Of Onion Juice On Hair

Scientific Studies Supporting Onion Juice for Hair Growth

Several scientific studies have shown promising results regarding onion juice's effectiveness in promoting hair growth.

One study conducted on individuals experiencing alopecia areata – a condition characterized by patchy hair loss – found that onion juice significantly increased hair regrowth when compared to a placebo group. Another study concluded that onion juice can speed up hair growth, improve scalp health, and reduce hair breakage.

Preparing Onion Juice for Hair Application

Now that we understand the incredible benefits of onion juice, it's time to prepare this magic potion for your hair.

Choosing the Right Onions

Not all onions are created equal when it comes to hair growth. Red onions are known to be particularly beneficial due to their higher sulfur content. However, if red onions are not available, you can still achieve great results with white or yellow onions.

Extracting the Juice

To extract onion juice, start by peeling the onions and cutting them into small pieces. Place the onion pieces in a blender or food processor and blend until you have a smooth puree. Strain the puree using a cheesecloth or a fine-mesh sieve to obtain the onion juice.

Preserving and Storing Onion Juice

Onion juice is best used fresh, but you can preserve it for up to a week by storing it in an airtight container in the refrigerator. However, keep in mind that the potency of onion juice gradually diminishes over time, so it's always best to use it as soon as possible for optimal results.

Read moreHair Growth By Age: Understanding The Natural Progression

How To Apply Onion Juice on Your Hair

Now that you have your freshly prepared onion juice, let's discuss the steps to apply it to your hair.

Pre-Application Steps

Before applying onion juice, it's crucial to conduct a patch test to ensure that you are not allergic to it. Apply a small amount of onion juice on your inner wrist or behind your ear and wait for 15-20 minutes. If you experience any redness, itching, or irritation, refrain from using onion juice on your hair.

Once you've determined that you are not allergic to onion juice, prepare your hair by washing it with a mild shampoo. This will remove any dirt, oil, or product buildup from your scalp, allowing the onion juice to penetrate effectively.

Application Process

To apply onion juice, divide your hair into sections for easier application. Using a cotton pad or a clean brush, apply the onion juice directly to your scalp, focusing on areas where you experience hair thinning or loss.

Gently massage the scalp using your fingertips for 5-10 minutes to ensure that the onion juice is evenly distributed and absorbed into the hair follicles. If the smell of onion is overwhelming, you can cover your hair with a shower cap to minimize the odor.

Leave the onion juice on your scalp for at least 30 minutes or overnight for maximum benefits. Rinse your hair thoroughly with lukewarm water and follow up with a mild conditioner.

Read moreHarnessing Coconut Oil For Optimal Hair Health

Post-Application Care

After using onion juice on your hair, it's essential to take care of your scalp. Avoid using harsh chemical-based hair products and minimize heat styling to reduce damage to your hair. Incorporate a balanced diet rich in vitamins, minerals, and proteins to support healthy hair growth.


Consistency is key when it comes to using onion juice for hair growth. Incorporate this natural remedy into your hair care routine at least once or twice a week to see visible improvements in the texture, thickness, and overall health of your hair.

So, unlock the secrets of hair growth with the power of onion juice. Follow this comprehensive guide and embrace your journey towards luscious locks. Say goodbye to hair woes and hello to beautiful, healthy hair!

Consult with an expert now


UPGUYS has strict sourcing guidelines to ensure our content is accurate and current. We rely on peer-reviewed studies, academic research institutions, and medical associations. We strive to use primary sources and refrain from using tertiary references.

This article is written for informational purposes only and does not constitute medical advice. The information provided in the articles cannot and should not replace advice from a healthcare professional. Talk to your healthcare provider about any physical or mental health concerns or the risks and benefits of any treatment or medication.