Boost Lab Edelweiss Neck Firming Serum

Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin. 

It’s often used to:

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.

Pentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.

The hydrophilic trait of Pentylene Glycol makes it a humectant. As a humectant, Pentylene Glycol helps draw moisture from the air to your skin. This can help keep your skin hydrated.

Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.

Topically, glycerin does several things at once:

This ingredient (LACCE) is a plant cell derived from the alpine plant, edelweiss. It is a humectant with antioxidant and skin protecting properties.

In-vitro and in-vivo research shows LACCE to exhibit strong antioxidant effects, including protecting skin against UVB induced stress. It also appears to support collagen production, improved skin elasticity, and wrinkle reduction.

We don't have a description for Eragrostis Tef Seed Extract yet.

Rice amino acids are the amino acids you get when you fully break down rice protein. These amino acids (glutamic acid, lysine, glycine, serine) are major players in your skin's natural moisturizing factor (NMF), or your skin's built-in hydration system.

A 2021 study in Cosmetics found that these amino acids can fight free radicals and may help with skin brightening by slowing down melanin production. Another 2025 review confirmed that rice-derived amino acids and peptides help with hydration, barrier repair, and antioxidant protection.

Baobab seeds are rich in vitamins A, E, and D, giving it nice antioxidant properties. It is hydrolyzed, or broken down by water molecules.

According to a manufacturer, this ingredient helps protect from UV damage, moisturize, and increases barrier health.

Proline is a non-essential amino acid, meaning your body can make it on its own. In skincare, it is a skin conditioning ingredient that keeps skin soft and hydrated.

It makes up about 23% of the collagen molecule (collagen is the protein responsible for keeping your skin firm) and is involved in your skin's natural hyaluronic acid production. When applied topically, proline can penetrate the skin fairly well due to its small molecular size.

We don't have a description for Hydrolyzed Vegetable Protein yet.

Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.

On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.

Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that:

The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure.

Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.

This ingredient comes from potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.

Hydrolyzed Soy Protein is a vegan protein made to mimic hydrolyzed collagen. It is created from soy, or glycine soja.

This ingredient is a humectant, meaning it helps hydrate the skin by binding to water. According to a manufacturer, it is also a great hair conditioner.

Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.

It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.

Sodium Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically.

Both the US FDA and EU Health Committee have approved the use of sodium benzoate. In the US, levels of 0.1% (of the total product) are allowed.

Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.

In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.