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The Role of Hormones in Eyelash Growth – What You Need to Know

A common cause of thinning eyelashes is thyroid disorder. Both hyperthyroidism (too many hormones) and hypothyroidism (too few) can affect lash growth.

A popular prescription lash serum, Latisse, contains bimatoprost. This prostaglandin analogue pushes lashes into the anagen phase, making them grow longer and thicker.

However, prostaglandin-based serums can irritate the eyes and skin around them. Natural lash serums with peptides can provide similar results without the side effects.


Prostaglandins are kind of like hormone-like lipids that control processes in the body including blood flow, clotting and inflammation. They are part of a larger group of lipids called the Eicosanoids (from the Greek word for 20) and arise from essential fatty acids such as arachidonic acid.

Protaglandins are important for many things, including the regulation of blood pressure, bone growth and cellular reproduction. They are also a part of the inflammatory response that helps fight infection and stimulates healing. However, too much prostaglandin can lead to chronic inflammatory conditions such as allergies, rashes, and asthma.

The prostaglandin analogues used in lash serums work by stimulating the hair follicles to prolong the anagen phase of the eyelash growth cycle and increase lashes thickness, length and density. They also encourage the production of melanin, which makes the lashes darker. One of the prostaglandin analogues most commonly used in lash serums is bimatoprost, the main ingredient in Latisse.

While prostaglandin lash serums do indeed grow lashes, they may also cause unwanted side effects including a panda eye effect (eyelids darkened and full of hair) and changes in the color of the iris. It is also possible for them to interfere with the blood vessels around the eyes, causing redness, enlarged vessels and a chronically dry, itchy or flaky eyelid skin.

There is a more natural alternative to prostaglandin lash serums, which are peptide based formulas that don’t disrupt the hair follicles or interfere with the inflammatory response. These products are generally safer and more effective and contain ingredients such as myristoyl pentapeptide-17 and myristic acid.

Growth Factors

Eyelashes have an important role to play in protecting your eyes from debris that could obstruct vision. They also help to keep your eyes healthy. Unfortunately, many factors can affect your eyelashes. Hormonal imbalances, aging and menopause can cause them to thin, as can certain health conditions such as ocular rosacea, styes and chalazia, and even skin cancer. Other more rare causes include localized alopecia, an auto- immune condition that can lead to full or partial hair loss on the head, body and eyelashes.

The good news is that there are some lash growth serums that can make your eyelashes look longer, thicker and more lustrous. The key is to choose a formula that contains ingredients that will boost your lashes’ growth cycle. These formulas contain peptides and amino acids, which are natural ingredients that act to hydrate and stimulate the eyelash hair follicle into a healthy phase of growth.

Another effective combination that enhances the anagen phase of lash hair growth is Myristoyl Hexapeptide-16 and myristic acid. These fatty acids increase the absorption of these peptides so they can penetrate the epidermis and enter the hair follicle. This results in the production of a larger quantity of high-quality keratin, which leads to healthier and longer- looking lashes. If you have been using a hormone-based lash treatment, it is best to wait 2- 3 months before switching to a peptide based serum. This will allow your glandular function to return to normal, allowing you to experience expected results from any eyelash enhancing product that you use.

Amino Acids

The amino acids that make up protein—and thus, eyelashes—are a huge part of what makes your lashes grow. But, they also need other nutrients to thrive. That’s where peptides and botanical ingredients come in.

Peptides are chains of two or more amino acid molecules that assemble via amide bonds, known as peptide linkages. The difference in the length and structure of the side chain gives each amino acid unique properties that determine how it will react with the other amino acids and with its surroundings. A functional group, like an acid, amine or alcohol, in the side chain can alter the polarity of the amino acid. This means that an amino acid with a single acid functional group (like tyrosine) will produce an acidic solution, while one with a double amine (tryptophan) produces a basic solution.(Careprost for your Eyelashes Growth)

Adding peptides to your lash care routine can help strengthen your lashes, keeping them healthy and thick. For example, a serum with Acetyl Tetrapeptide -3 and Red clover extract helps boost the growth phase of your lashes so they last longer.

It may also be possible to speed up the return of your lashes to their natural growth phase using a peptide-infused product with Acetyl Hexapeptide – 16 and Myristic Acid. This combination has been proven to promote the production of hexapeptide which supports and prolongs your lashes’ anagen phase.

In addition to these peptides and botanical ingredients, you can also support your lashes’ ability to regrow and thrive by taking a daily dose of biotin. Biotin, a vitamin, is important for strengthening keratin, the protein that makes up your lashes and hair.

Botanical Extracts-Eyelash

The botanical extracts market is driven by increased demand for plant-bas ingredients that are natural, safe, and effective. These natural ingredients are increasingly being use in food and beverages as well as cosmetics & personal care products. The market is also being fuele by growing health awareness, rising disposable income levels, and changing lifestyles.

Botanical extracts are created by soaking the botanical in liquid to retrieve certain chemicals or beneficial parts of the botanical. Hanalei uses a wide range of Hawaiian botanicals in their products to help support healthy skin and eyelashes.

There are 4 different types of botanical extracts: tinctures, glycerites, macerated/infused oils, and essential oils. They differ in their potency and how they can  use. For example, essential oils are highly concentrat so they must  dilut in something like water or alcohol before use, while tinctures are very powerful and can be used on their own. Glycerites, on the other hand, are soluble in glycerin and are perfect for using in water-based products.

A good botanical ingredient to look for is hyaluronic acid. Hyaluronic acid can attract up to 1000X its weight in moisture, which helps hydrate and plump the eyelash skin, making it appear fuller. It is also known for its anti-inflammatory properties, which are helpful to balance eyelash skin microflora.

Another great botanical ingredient to look for is grape stem cell extract. This has shown to promote a healthy growth cycle of the eyelash follicles. It is especially useful in the anagen phase, where it can encourage the lashes to grow thicker and longer. In the catagen phase, it can help to prolong the anagen phase and in the telogen phase, it can help to keep the lashes looking thick and lush.

The Benefits of Castor Oil for Eyelash Growth

While the anecdotal evidence for castor oil eyelash growth is promising, a number of factors influence whether your eyebrows and lashes grow longer and thicker, including your diet, heredity and physical health. So, if you’re thinking about replacing your Latisse regimen with this natural remedy, it’s important to patch test first.


While experts say that applying castor oil to eyelashes will not make them grow longer, they do agree that it can help keep them looking thick and full. It’s also an intensely hydrating oil, and a staple ingredient in many homemade lash serums.

The ricinoleic acid found in the oil can help moisturize the skin and hair, and it may prevent transepidermal water loss by coating the skin with an emollient film, Marcus says. Douglas adds that the oil can help “prevent dryness and brittleness of lashes, enabling them to grow longer.”

In addition to its moisturizing properties, castor oil has anti-inflammatory and antioxidant properties. It can also promote healthy cell growth and a healthier complexion, Pande explains. It can also prevent the buildup of makeup residue and other debris on the lashes, which is a common cause of eyelash discoloration.

The oil also has a low comedogenic score, which means it’s unlikely to clog pores or cause blackheads, if applied correctly, Ziering says. It’s also relatively inexpensive and available at most grocery stores, making it a cost-effective addition to your skincare routine.

You can apply the oil to your eyelashes using a cotton swab or thin brush. Just be careful not to get it in your eyes, since doing so can lead to temporary blurred vision. The best time to apply it is at night, so your lashes have several uninterrupted hours to absorb it.


Imagine waking up with lush, fluttery eyelashes that you can bat flirtatiously to catch your crush’s attention from across the room. This dreamy look doesn’t come from falsies or pricey serums, but rather the secret beauty elixir that’s uber-cheap and available at your local drugstore: castor oil.

Basically, the oil acts as a conditioner to keep lashes hydrated so they’re less likely to break or become weak. Plus, it’s a natural moisturizing agent, so you can skip the chemical-laden lash products that are sold in drugstores (though they may be just as effective).

A study published in International Journal of Science and Research suggests that using castor oil can increase blood circulation to the hair follicles, helping them grow thicker. It’s also rich in fatty acids, including ricinoleic acid, which can improve the appearance of hair and eyebrows. It can also help prevent the thinning of hair caused by a hormone called prostaglandin D2 that triggers hair loss.

You can find pure castor oil for eyelashes at your local drugstore or online. Most bottles are about $10 and often come with little lash- specific wands for easy application. If you’re concern about getting the oil in your eyes, you can purchase a lash serum that has formulated with other ingredients that will make it more gentle.

Just be careful when applying it, though. If you accidentally get any of the oil on your lid, it can cause a slight burning sensation. You can also opt for a lash serum that contains other healthy ingredients, like aloe and peptides, to give your lashes an extra boost eyelash .

Makes Eyelashe Look Glossier

If you hang around TikTok long enough, you’ve probably seen videos of people claiming to have longer and healthier-looking lashes by slathering them with castor oil. But is there any truth to the claims? According to dermatologists, it might not make your lashes grow any longer, but it could give them a glossier appearance.

The oil, which comes from the seeds of the Ricinus Communis plant, contains fatty acids, vitamin E, and other nutrients that are good for your hair and skin. And though it doesn’t have much scientific backing, it’s thought to boost blood circulation in the eye area, which may improve eyelash and eyebrow health.

That’s why it’s a popular ingredient in many natural and DIY beauty products. You can use it as a moisturizer to keep your lashes and brows healthy, or you can mix it with other oils (like olive or argan) to create a makeup primer. Some experts recommend applying the oil to your lashes and brows before you apply any makeup, as it helps the products stick better.

Another benefit of the oil is that it’s said to an effective conditioner, making your lashes look glossy. “As we age, our lashes become thinner and duller, so using a hydrating oil like castor can help to maintain your current lash length and eyelash color,” says dermatologist Mona Gohara.

Just be careful not to get the oil in your eyes, warns dermatologist Marisa Garshick. “As with any topical product, you should always do a patch test before putting the

oil near your eyes,” she says. Swatch a little on the inside of your wrist or arm for 24 hours to make sure you’re not allergic to it.

Helps Eyelashe Grow Longer

As for the rumor that castor oil can help eyelashes grow longer, there’s no scientific evidence supporting this claim. The oil may be beneficial, however, because it coats the lashes to thicken them and prevents dehydration, which can cause lash breakage. It also contains ricinoleic acid, an omega-9 essential fatty acid that has shown to stimulate hair growth and promote thickness (1).

It’s also worth mentioning that the oil can have some anti-inflammatory and antioxidant properties, which can help keep the skin around the eyes healthy (2). In addition, it’s rich in vitamin E, which is an antioxidant that may help to repair damage caused by environmental factors and other oxidative stressors (3).

To use the oil, experts recommend putting a few drops of it on a cotton swab and running it along the lash line. Be careful not to get the oil in your eyes, though, as this can be painful and dangerous. You can also try applying the oil with a clean mascara wand or thin brush. Make sure to wash your hands first, and don’t let the oil get on any other sensitive areas of the face.

Another option is to mix together a few tablespoons of olive oil and a few drops of castor oil. You can store the mixture in a container or bottle for several uses. Just apply the mixture with a clean mascara wand or brush and leave it on for a few hours before washing it off.

The drug slows the “growth phase” of the lashes, making them appear longer before they shed. It also helps the lashes retain more length after shedding.

Read more informative articles at Emu Articles

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