
Nail strengtheners are designed to enhance nail structure, making nails more resistant to breaking and peeling. While they do not directly speed up nail growth, they can help nails grow longer by strengthening them and reducing breakage. Nail hardeners, on the other hand, are designed for those who need a quick fix to strengthen soft and bendy nails and typically contain harsh chemicals that can weaken nails over time. Therefore, it is recommended to transition to a nail strengthener once nails are no longer peeling.
| Characteristics | Values |
|---|---|
| Purpose | Prevent nails from breaking/peeling |
| Ingredients | Wheat protein, keratin, biotin, calcium, nylon, sulfhydryl protein, green tea extract, algae extract, cannabis sativa seed oil |
| Application | Applied like nail polish, used as a base coat or alone |
| Results | Nails become longer, harder, more hydrated, stronger |
| Tips | Use cuticle oil, maintain a healthy diet |
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What You'll Learn

Nail strengtheners don't directly speed up nail growth
While nail strengtheners are effective in improving nail health, they do not directly speed up nail growth. Instead, they strengthen nails over time, reducing their tendency to break, chip, or peel, thereby allowing them to grow longer naturally.
Nail strengtheners contain ingredients like keratin, wheat protein, and calcium, which fortify the nail bed, making nails more resilient and resistant to breakage. Some formulas also contain vitamins and moisturizing agents to prevent nails from becoming brittle. By sealing in moisture and creating a protective coat, nail strengtheners can help nails grow longer without breaking.
Nail hardeners, on the other hand, are designed for those who need a quick fix for extremely weak nails. They contain ingredients like formaldehyde, toluene, and ethyl acetate, which harden the nail plates, making them less flexible. However, consistent or excessive use of nail hardeners can have the opposite effect, weakening the nails over time.
To promote nail growth, it is recommended to focus on keeping the nails and cuticles hydrated and maintaining a healthy diet. Cuticle oils and moisturizers can be used daily to nourish and moisturize the nails and surrounding skin. Additionally, a balanced diet rich in vitamins, minerals, and proteins can support nail growth and strength.
While nail strengtheners may not directly accelerate nail growth, they play a crucial role in maintaining nail health by reducing breakage and enhancing resilience. By using these products consistently and incorporating nourishing habits, individuals can achieve stronger and longer nails over time.
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Nail hardeners vs. nail strengtheners
Nail hardeners and strengtheners are both designed to help you achieve stronger, healthier nails. However, they work in different ways and are suitable for different types of nails.
Nail hardeners work by creating a hard, protective shell over your nails, reinforcing and thickening them, and making them less prone to breaking. They typically contain ingredients such as formaldehyde, toluene, calcium, and various proteins, which work to reinforce and fortify the nail bed. According to manicurist Queenie Nguyen, nail hardeners are ideal for those who need a quick fix to strengthen their soft, bendy nails. They are also suitable for those who are having extreme difficulty growing their nails, and nail breakage is causing pain.
Nail strengtheners, on the other hand, contain ingredients like keratin, wheat protein, and biotin, which penetrate between the nail layers to help strengthen the nail plate over time. They create a protective barrier over your nails while nourishing and hydrating them, allowing the nail to be flexible yet providing more protection. According to cosmetic chemist Yashi Shrestha, nail strengtheners are great for someone who already has nails in good shape and wants to prevent brittle or unhealthy nails. They are often used as a base coat underneath nail polish or can be used alone.
Precautions
While nail hardeners provide a quick solution to brittle and weak nails, they may contain harsh chemicals that can have negative long-term effects. Consistent or excessive use of nail hardeners can make your nails even weaker over time. Therefore, it is recommended to transition to a nail strengthener once your nails are no longer peeling. Additionally, it is important to choose products that are free from harmful ingredients such as formaldehyde or formalin, which can weaken the nails and make them brittle.
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Ingredients to look for in nail strengtheners
While nail strengtheners do not make your nails grow faster, they help prevent them from breaking, peeling, or becoming brittle. The best ingredients to look for in nail strengtheners include:
Keratin
Keratin is a type of protein that is found in nails, hair, and skin. It works by binding the keratin protein in your nails more tightly and hardening your nail plates, making them less flexible and more durable.
Wheat Protein
Hydrolyzed wheat protein reinforces brittle nails and helps them grow long. It also promotes flexibility, reduces brittleness, and creates a protective coat to seal in moisture.
Calcium
Calcium is a strengthening ingredient that helps nails become harder and longer.
Vitamin A
Vitamin A supports nail growth and effectively strengthens bones, tissues, and teeth. It can be found in foods like eggs, apples, lemons, oranges, and milk.
Vitamin E
Vitamin E is an antioxidant that helps prevent free-radical damage from the environment. It increases moisture to the nail bed and the skin around the nails, restoring and rejuvenating nails. Vitamin E can be found in olive oil.
Biotin
Biotin is critical for nail growth and can be found in walnuts, milk, oats, sardines, cooked eggs, legumes, and cucumbers. It helps the body metabolize fats and proteins for nails.
Oils
Nail strengtheners that include conditioning ingredients like oils can help nails grow long and healthy. Oils such as argan oil, coconut oil, and cuticle oil can help prevent breakage, soothe inflammation, and add moisture.
Zinc
Zinc helps with cell growth and may speed up nail growth. A lack of zinc can lead to weak nails, so incorporating zinc-rich foods like spinach, beans, seeds, and cashew nuts can promote healthier-looking nails.
Green Tea Extract and Algae Extract
Green tea extract and algae extract are strengthening ingredients that can be found in some nail growth treatments. They help protect, hydrate, and strengthen nails.
Celery Seed Extract
Celery seed extract helps strengthen and smooth nails, eliminate discolouration, and prevent chipping.
While nail strengtheners with these ingredients can help support nail health, it is also important to maintain a healthy diet and keep your nails hydrated to promote nail growth.
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Ingredients to avoid in nail strengtheners
Nail strengtheners are products that can help prevent brittle or unhealthy nails and support nail growth. They contain ingredients that penetrate the nail bed to hydrate and nourish nails so that they can grow stronger.
However, some nail strengtheners contain damaging ingredients that can cause the nail to become more brittle and prone to breakage over time. Here are some ingredients to avoid when choosing a nail strengthener:
Formaldehyde
Formaldehyde is a common ingredient in nail products, including nail strengtheners. It can make the nails appear very strong initially, but over time, it can weaken the nails and make them brittle. Formaldehyde can also cause skin irritation and allergic reactions. It is one of the toxic trio of ingredients commonly found in nail polishes, along with dibutyl phthalate and toluene.
Formalin
Formalin is a derivative of formaldehyde and has similar detrimental effects on nail health. It is often found in nail strengtheners and can cause nails to become brittle and more prone to breakage over time.
Methylene Glycol
Methylene glycol is another ingredient to avoid in nail strengtheners. It is a bonding agent that can be found in nail hardeners and strengtheners. While it may help to reinforce the nail, it can also contribute to nail brittleness and breakage if used excessively.
Toluene
Toluene is another ingredient that is best avoided in nail strengtheners. It is often used in nail polishes to make the coating tough and resilient, and it helps the polish adhere to the nail. However, it can be harsh on the nails and contribute to brittleness and breakage.
Ethyl Acetate
Ethyl acetate is a bonding agent commonly found in nail hardeners. While it may provide a temporary strengthening effect, it can also dry out the nails and make them more prone to breakage in the long run.
When choosing a nail strengthener, look for products labelled as "3-free" or higher, which indicates that they are free from these toxic ingredients. It is also important to follow the directions for use and any warning statements on the product labels to ensure safe and effective use.
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Nail strengtheners as a base coat
Nail strengtheners are a great way to provide some structure to weak, brittle nails and can be used as a base coat. They are designed to enhance nail structure, making nails more resistant to breaking and peeling. While they don't directly speed up nail growth, they do strengthen nails, reducing breakage and allowing them to grow longer naturally.
Nail strengtheners contain ingredients like keratin, which penetrates between the nail layers to help strengthen the nail plate over time. Other effective ingredients to look out for include wheat protein, biotin, calcium, and sulfhydryl protein. Biotin, for example, is a tried-and-true nail-enhancing ingredient proven to promote healthy nail growth.
When using a nail strengthener as a base coat, it is important to start with clean nails. You can then apply the nail strengthener as a base coat underneath your nail polish. Some formulas are designed to be used alone for maximum effectiveness, so be sure to follow the manufacturer's guidelines.
For best results, it is recommended to apply a nail strengthener a few times per week. It is also important to maintain a consistent nail care routine and choose high-quality products that suit your specific needs. In addition to using a nail strengthener, you can promote nail growth and strength by keeping your nails and cuticles hydrated and maintaining a healthy diet with plenty of vitamins and minerals.
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Frequently asked questions
Nail strengtheners do not directly speed up nail growth, but they can help your nails grow longer by strengthening them and reducing breakage.
Nail strengtheners often contain proteins, calcium, vitamins, and keratin to fortify nails over time.
Some nail strengtheners are designed to be used alone, while others can double as a base coat under nail polish. Follow the manufacturer's guidelines for how often to apply it.
Nail hardeners are designed for those who are having extreme difficulty growing their nails due to breakage and pain. They contain ingredients like formaldehyde, toluene, calcium, and various proteins to reinforce and harden the nail bed. Nail strengtheners, on the other hand, are for someone who already has nails in good shape and wants to prevent brittle or unhealthy nails.
Yes, you can apply cuticle oil every night before bed to promote growth and keep your nails strong. Maintaining a healthy diet with plenty of vitamins and minerals can also help strengthen your nails.











































