DIY Cosmetica

Eyelashes And Eyebrows Serum

PhaseIngredientPercent (%)Weight (g)
Phase APropanediol41
Xanthan gum1.20.3
Aloe vera liquid7418.5
Phase BZinc PCA0.80.2
Amaranthus Caudatus Seed Extract61.5
Green tea extract30.75
Rosemary extract2.50.63
Hyaluronic acid low molecular weight0.10.03
Preservative (ProBiocin V®)20.5
Citrus grandis seed extract2.40.6
Total weight (g)

Eyelash and eyebrows serum can help you grow longer, thicker lashes and brows. Lash serums are designed to be left on overnight, absorbing the skin and hair while you sleep.

Most serums are based around peptides: short chains of amino acids, which are the building blocks of protein.

In this recipe, I use Amaranthus Caudatus Seed Extract. This extract contains squalene, a natural compound that can promote hair growth by nourishing hair follicles and stimulating blood flow.

Amaranthus caudatus seed extract is a natural humectant which can attract and retain moisture in hair strands, keeping them hydrated and healthy.

The extract contains vitamin E, an antioxidant that can help to reduce oxidative stress in hair follicles, preventing hair loss and promoting healthy hair growth.

Amaranthus caudatus seed extract is believed to be a natural, safe, and effective ingredient that can help to nourish, strengthen, and promote healthy hair growth.


For the liquid base, I chose aloe vera liquid. Aloe vera liquid is a natural humectant and has antifungal and antibacterial properties. Aloe vera liquid is rich in amino acids, vitamins, and minerals that can strengthen hair strands. You can replace the aloe vera liquid with hydrosol or distilled water.

Propanediol is a humectant and a Solvent( it can dissolve other ingredients, making it an effective solvent for cosmetics). Propanediol is usually derived from natural sources, such as corn or sugar beets. Propanediol can increase the absorption of active ingredients into the skin, making them more effective. You can replace the propanediol with glycerin.

For the active ingredients, I chose Zinc PCA, which has been shown to stimulate the activity of hair follicle cells, promoting hair growth and thickening hair strands. Zinc PCA can help to prevent hair loss by reducing the production of DHT (dihydrotestosterone), a hormone that can cause hair follicles to shrink and lead to hair loss.


I also added Trehalose, a naturally occurring sugar molecule believed to have several benefits for hair growth (Trehalose can help strengthen hair strands and prevent breakage by forming a protective barrier around the hair shaft).

Next in my active ingredients is Hyaluronic acid low molecular weight. Hyaluronic acid is a natural substance in the body known for its ability to retain moisture and promote tissue repair. Low molecular weight hyaluronic acid, also known as LMW-HA, is a smaller-sized hyaluronic acid molecule that can penetrate deeper into the skin and hair follicles, making it an effective ingredient for promoting hair growth ( LMW-HA can stimulate hair growth by promoting the proliferation of hair follicle cells and enhancing the production of hair matrix cells, which are responsible for hair growth and can strengthen hair strands and prevent breakage by improving the elasticity of the hair).

Next is a green tea extract that can help to reduce hair loss by reducing the production of DHT, a hormone that can cause hair follicles to shrink and lead to hair loss. Green tea extract is rich in vitamins and minerals that can help to strengthen hair strands and prevent breakage.

Also, I used rosemary extract, which is known for promoting hair growth by stimulating blood flow, enhancing the production of hair matrix cells, and preventing hair follicle miniaturization.

You can use other active ingredients to replace the ones listed above, such as nettle leaf extract, Ginseng extract, Hydrolyzed wheat protein, Lepidium Meyenii Root Extract (maca), Hydrolyzed Silk or Vitis vinifera (grape) seed extract. All of these alternatives can help with hair growth.

Another active ingredient I chose for this serum is Astaxanthin. Astaxanthin is a naturally occurring carotenoid that is found in algae, salmon, trout, and other seafood. It is a powerful antioxidant that has been shown to have several benefits for hair growth. Astaxanthin has anti-inflammatory properties that can help to reduce inflammation. Astaxanthin can protect hair from damage caused by UV radiation, pollution, and other environmental stressors that can damage hair and inhibit hair growth.

Astaxanthin is a very potent antioxidant in nature. It is a natural anti-inflammatory, promotes hydration and protects against solar radiation. You can use the powder or the liquid form. You can replace Astaxanthin with Ubiquinone (Coenzyme Q10) powder or liquid. The Astaxanthin I’ve used has a vibrant orange color. (It does not stain the skin when applied on the skin).


I added Citrus grandis seed extract, also known as grapefruit seed extract, a natural ingredient often used in hair care products due to its antimicrobial and antioxidant properties. Citrus grandis seed extract can protect hair from damage caused by UV radiation, pollution, and other environmental stressors that can damage hair and inhibit growth.

For my preservative, I used ProBiocin V®. If you use another cosmetic preservative, please follow the supplier's instructions and adjust the formula if needed. You can reduce or add to the aloe vera liquid to adjust the formula according to the percentage you need to use for your chosen preservative.

This recipe is for 25g that can fill two small tube containers. You can use the calculator to change the amount.


  1. To a beaker, add the aloe vera liquid.


  1. Make a slurry by combining the xanthan gum soft and the Propanediol.




  1. Combine the slurry with the aloe vera liquid.


  1. Add all phase B ingredients and mix to combine.













  1. Check and adjust the PH level. My final product has a 4.9 PH level. Between 4.5 and 5.5 is fine. Check this post about PH adjustments in cosmetics.

  2. Pour the serum into containers.






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