California Naturals Re:GRO Anti-Thinning Scalp Serum - 3 fl oz: Unscented, All Hair Types
Analysis updated August 2026 · How Scout scores
At a glance
Summary
This scalp serum contains a variety of beneficial ingredients such as Capixyl™, aloe vera, panthenol, biotin, and rosemary oil, which are known for promoting hair health and reducing thinning. The formulation is free from harsh chemicals like sulfates, parabens, and synthetic fragrances, making it a gentle option for scalp care. However, the presence of some processed ingredients and the overall processing level slightly limit its maximum potential score.
Key ingredients 20
Capixyl™Good
Capixyl™ is a blend of peptides and red clover extract known for its potential to reduce hair thinning. It is believed to improve hair density and scalp health. It is generally well-tolerated and considered beneficial for hair care.
Risks
There are minimal risks associated with Capixyl™, though some individuals may experience mild irritation.
Benefits
Capixyl™ can help improve hair density and reduce hair thinning.
Aloe Barbadensis Leaf JuiceGood
Aloe vera is known for its soothing and moisturizing properties. It helps to hydrate the scalp and reduce irritation. It is a natural ingredient that is well-regarded in hair care.
Risks
Aloe vera is generally safe, but some people may experience allergic reactions.
Benefits
Aloe vera provides hydration and soothing benefits to the scalp.
Panthenol (Vitamin B5)Good
Panthenol is a form of Vitamin B5 that is used for its moisturizing and conditioning properties. It helps to improve hair elasticity and shine. It is a beneficial ingredient in hair care products.
Risks
Panthenol is generally safe, but excessive use may lead to buildup.
Benefits
Panthenol enhances hair moisture, elasticity, and shine.
BiotinGood
Biotin is a B-vitamin that is often associated with hair health. It is believed to strengthen hair and promote growth. It is a popular ingredient in hair care products for its potential benefits.
Risks
Biotin is generally safe, but excessive intake can lead to skin rashes.
Benefits
Biotin supports hair strength and growth.
Rosmarinus Officinalis (Rosemary) Leaf OilGood
Rosemary oil is known for its antimicrobial and anti-inflammatory properties. It can help to improve scalp health and promote hair growth. It is a natural ingredient that is well-regarded in hair care.
Risks
Rosemary oil can cause irritation in sensitive individuals.
Benefits
Rosemary oil supports scalp health and hair growth.
AdenosineGood
Adenosine is used in hair care for its potential to promote hair growth and improve hair density. It is believed to enhance the anagen phase of hair growth. It is considered a beneficial ingredient for hair health.
Risks
Adenosine is generally safe, but some may experience mild irritation.
Benefits
Adenosine promotes hair growth and improves hair density.
PhytoCellTec™ Solar VitisGood
This ingredient is derived from grape stem cells and is used for its antioxidant properties. It helps to protect hair and scalp from environmental damage. It is a beneficial addition to hair care formulations.
Risks
There are minimal risks associated with this ingredient.
Benefits
It provides antioxidant protection for hair and scalp.
Cucurbita Pepo (Pumpkin) Seed OilGood
Pumpkin seed oil is rich in nutrients and is used for its potential to promote hair growth. It is believed to improve scalp health and reduce hair loss. It is a natural and beneficial ingredient in hair care.
Risks
Pumpkin seed oil is generally safe, but may cause irritation in sensitive individuals.
Benefits
It promotes hair growth and improves scalp health.
Serenoa Serrulata Fruit ExtractGood
Also known as saw palmetto, this extract is used for its potential to reduce hair loss. It is believed to inhibit DHT, a hormone linked to hair thinning. It is a beneficial ingredient for those experiencing hair loss.
Risks
Saw palmetto is generally safe, but may cause mild digestive issues.
Benefits
It helps to reduce hair loss by inhibiting DHT.
Malus Domestica Fruit Cell Culture ExtractGood
Derived from apple stem cells, this extract is used for its regenerative properties. It helps to protect and rejuvenate hair follicles. It is a beneficial ingredient for promoting hair vitality.
Risks
There are minimal risks associated with this ingredient.
Benefits
It rejuvenates hair follicles and promotes hair vitality.
Ricinus Communis (Castor) Seed OilGood
Castor oil is known for its moisturizing and conditioning properties. It helps to nourish the scalp and promote hair growth. It is a natural and beneficial ingredient in hair care.
Risks
Castor oil is generally safe, but may cause irritation in sensitive individuals.
Benefits
It nourishes the scalp and promotes hair growth.
Caprylyl/Capryl GlucosideGood
This is a mild, non-ionic surfactant derived from coconut oil and glucose. It is used for its gentle cleansing properties. It is a beneficial ingredient for sensitive scalps.
Risks
There are minimal risks associated with this ingredient.
Benefits
It provides gentle cleansing suitable for sensitive scalps.
Aqua/Water/EauNeutral
Water is a common solvent used in cosmetic formulations. It acts as a base for the product, helping to dissolve other ingredients. It does not provide direct benefits or risks.
Risks
There are no inherent risks associated with water in cosmetic formulations.
Benefits
Water helps to hydrate and dissolve other beneficial ingredients in the formula.
1,2-Hexanediol (and) Caprylyl GlycolNeutral
These are used as humectants and preservatives in cosmetic formulations. They help to maintain moisture and extend product shelf life. They are generally considered safe and non-irritating.
Risks
There are minimal risks, though some individuals may experience mild irritation.
Benefits
These ingredients help to retain moisture and preserve the product.
CaffeineNeutral
Standard formulation ingredient — neither beneficial nor harmful at typical use.
Risks
Caffeine is generally safe, but excessive use may cause irritation.
Benefits
Caffeine stimulates circulation and may reduce hair loss.
Xanthan GumNeutral
Xanthan gum is used as a thickening agent in cosmetic formulations. It helps to stabilize and improve the texture of the product. It is generally considered safe and non-irritating.
Risks
There are minimal risks, though some individuals may experience mild irritation.
Benefits
It stabilizes and thickens the product formulation.
SilicaNeutral
Silica is used in cosmetic formulations for its texturizing properties. It helps to improve the feel and application of the product. It is generally considered safe and non-irritating.
Risks
There are minimal risks, though inhalation of silica dust can be harmful.
Benefits
It improves the texture and application of the product.
EthylhexylglycerinNeutral
Ethylhexylglycerin is used as a preservative and skin conditioning agent. It helps to enhance the efficacy of other preservatives and improve skin feel. It is generally considered safe and non-irritating.
Risks
There are minimal risks, though some individuals may experience mild irritation.
Benefits
It enhances preservation and improves skin feel.
CarbomerNeutral
Carbomer is used as a thickening agent in cosmetic formulations. It helps to stabilize and improve the texture of the product. It is generally considered safe and non-irritating.
Risks
There are minimal risks, though some individuals may experience mild irritation.
Benefits
It stabilizes and thickens the product formulation.
Sodium BenzoateBad
Synthetic preservative that can form benzene in the presence of vitamin C.
Risks
High concentrations may cause irritation or allergic reactions.
Benefits
It preserves the product by preventing microbial growth.
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