Best Products for Hair Growth and Thickness

Thinning and a loss of hair fullness can happen for many reasons, including genetics, hormonal changes, stress, and nutritional deficiencies. Given that these concerns have different causes, there’s not necessarily one single product that’s “best” for everyone. A more effective approach starts with understanding your individual hair goals and choosing credible, practical products that can support your hair growth journey.

Here are three of the best products to get you started on your hair growth journey, including peptides, scalp treatments, and thickening products.

1. Peptide-Based Hair Growth Capsules

Peptides have become an increasingly popular category in hair care, and for good reason. Different peptides can have different functions, which is why the specific technology and formulation behind a product matter. If you plan to take a science-backed approach to improving your hair thickness, focus on understanding how peptides fit into a broader hair care routine.

OMI’s IFP-131™ Hair Growth Peptides take a targeted approach to supporting stronger, fuller-looking hair. The technology is designed to activate and support keratin peptides at the follicle, helping to optimize conditions for hair growth. By targeting the keratin peptides that anchor hair to the scalp, IFP-131™ peptides help strengthen every strand from within.

Our approach is designed to fit into a consistent, routine-friendly approach to hair care. For your convenience, the IFP-131™ Hair Growth Peptides are available both as capsules and gummies to fit any taste.

With regular use, our clinically tested peptides can become part of a long-term routine that supports your scalp, strengthens strands, and contributes to fuller-looking hair.

2. Nulastin Hair Vibrant Scalp Treatment

Growing healthy-looking hair starts at the scalp and follicles. Because each strand of hair begins in a follicle beneath the scalp, scalp-focused care targets the area where hair is produced. Just like skin anywhere else on the body, the scalp has its own barrier and ecosystem. Excess buildup, irritation, or certain scalp conditions can interfere with hair growth and shedding, so consistently keeping this area clean can support normal follicle function.

NULASTIN's Hair Vibrant Scalp Treatment is formulated with a blend of proteins and peptides intended to support elastin, the protein that helps anchor each strand to the scalp. According to the brand, supporting elastin around the follicle may help minimize hair fallout and prevent shedding.

That said, because a topical scalp treatment is left to sit on your scalp rather than rinsed out, it's worth trying a patch test first, especially if you tend to have sensitive skin.

3. Nutrafol Hair Serum

Nutrafol's Hair Serum is a leave-in scalp treatment formulated with Ashwagandha Exosomes alongside botanical extracts (such as Irish Moss Peptides and Pea Sprout Extract). According to the brand, the formula is intended to nourish, hydrate, and support the scalp’s natural barrier.

This serum is meant to complement, rather than replace, a broader hair care routine. It's made to be gentle enough for regular use while still helping improve the look and feel of your hair’s thickness in 90 days with consistent use.

Keep in mind that the way your hair is cleansed and conditioned can also affect how full it looks (and feels). Gentle washing can help remove excess oil and buildup that sometimes leaves your hair looking flat or weighed down.

Layering a scalp-targeted serum like this into your routine, alongside a volumizing shampoo and conditioner that’s suited to your hair type , can help improve the appearance of thickness while maintaining a fresh, balanced foundation for future growth. Following that up with a moisturizing conditioner can maintain overall hair softness and help reduce the friction that tends to occur during brushing or detangling.

Supporting Your Goals

If you’re experiencing hair loss, identifying the cause can help you determine which products are best for you. For many people, the most effective approach involves combining methods, rather than relying on one single treatment. For a well-rounded, comprehensive routine, you can try pairing a topical product, like the NULASTIN Hair Vibrant Scalp Treatment or Nutrafol's Hair Serum, with our  IFP-131™ Hair Growth Peptides.

Frequently Asked Questions

What are the best products for hair growth and thickness?

The best products depend on your specific concerns. Scalp treatments like NULASTIN's Hair Vibrant Scalp Treatment, leave-ins like Nutrafol's Hair Serum, and peptide-based hair growth capsules or gummies like ours at OMI can each play beneficial roles in a hair growth routine.

Do hair growth shampoos actually work?

Hair growth shampoos can help hair to look fuller by improving the condition and appearance of strands, but might not address the underlying cause of hair thinning. If you’re experiencing significant or persistent hair loss, a dermatologist can help you identify more effective treatment options.

Can peptides help support thicker, stronger-looking hair?

Yes, but peptide technologies can vary, so it’s important to consider the specific formula and its intended function. OMI’s IFP-131™ Hair Growth Peptides are designed to activate and support keratin peptides at the follicle, helping optimize the environment for growth, anchor hair to the scalp, and strengthen strands from within.

How long does it take to see results from hair growth products?

Meaningful changes in hair growth take time, though the exact duration depends on the products you’re using and your individual concerns. Scalp treatments like NULASTIN's Hair Vibrant Scalp Treatment may bring visible results in around 6 to 12 weeks of consistent use, whereas a serum like Nutrafol's may bring improvements in as little as 90 days, as long as you’re using it consistently. At OMI, our hair growth peptides are clinically proven to support fuller-looking hair in 90 days. 

That said, it’s important to keep in mind that it can take several months of consistent use before you notice any real, lasting changes in overall thickness.

How can I make my hair look thicker right away?

Volumizing styling products and root-lifting techniques can create the appearance of more immediate fullness. Gentle detangling, frequent conditioning, and heatless styling can help to retain the strands that contribute to your hair’s overall density.