• L'ANZA Healing Strength Silk Serum, 100 ml, for stronger, smoother-looking hair
  • L'ANZA before and after hair comparison showing 7.5x less breakage
  • L'ANZA Silk Serum shown in its old and new packaging with the same results
  • L'ANZA Silk Serum benefits, including strengthening hair, smoothing frizz and flyaways, and enhancing shine
  • L'ANZA Healing Strength Neem Fortifying Complex with neem leaves and a dropper, highlighting its strengthening benefits
  • L'ANZA Healing Strength Neem Fortifying Complex with a customer review highlighting stronger, lightweight feeling hair
  • L'ANZA Healing Strength haircare collection with shampoo, conditioner, detangling primer, and silk serum
1 7
Bestseller
healing strength

Healing Strength Silk Serum

Healing Strength Silk Serum

293 Reviews

Clinically shown to deliver 7.5x less breakage*, this lightweight leave-in serum strengthens fragile, damaged strands while smoothing frizz and enhancing luminous shine.

Size
Healing Strength Silk Serum
$48.00
$48.00
Sale Sold out
Liquid error (snippets/product-sticky-form line 74): Could not find asset snippets/icon-caret.liquid

Key Benefits

  • 7.5x less BREAKAGE*
  • Strengthens and fortifies every strand
  • Smooths frizz and flyaways
  • Enhances shine
Disclaimer:
*Based on independent instrument testing of hair breakage using a regimen of Healing Strength Shampoo, Conditioner, Detangling Primer & Silk Serum vs. hair treated with non-conditioning shampoo.

Full Description

This leave-in serum strengthens fragile, damaged strands while smoothing frizz and enhancing shine. The restorative botanicals fortify fragile hair from the inside-out for stronger, healthier hair.

Ingredients

CYCLOPENTASILOXANE, DIMETHICONE, CAPRYLYL METHICONE, PHENYL TRIMETHICONE, MELIAAZADIRACHTA SEED OIL, MELIA AZADIRACHTA EXTRACT, HYDROLYZED PEA PROTEIN, HYDROLYZED VEGETABLE PROTEIN, DIMETHICONOL CYSTEINE, CERAMIDE NP, SODIUM HYALURONATE, DIMETHICONOL MEADOWFOAMATE, SODIUM PCA, MAGNESIUM PCA, MANGANESE PCA, ZINC PCA, HORDEUM DISTICHON (BARLEY) EXTRACT, PHELLODENDRON AMURENSE BARK EXTRACT, SANTALUM ALBUM (SANDALWOOD) EXTRACT, CITRUS LIMON (LEMON) FRUIT EXTRACT, FUMARIA OFFICINALIS FLOWER/LEAF/STEM EXTRACT, HELIANTHUS ANNUUS (SUNFLOWER) SEED OIL, SQUALANE, FUMARIC ACID, TRIMETHYLSILOXYAMODIMETHICONE, TETRAHEXYLDECYL ASCORBATE, WATER (AQUA), QUATERNIUM-95, BENZOTRIAZOLYL DODECYL P-CRESOL, BUTYLENE GLYCOL, PROPYLENE GLYCOL, PROPANEDIOL, CAPRYLYL GLYCOL, ETHYLHEXYLGLYCERIN, POTASSIUM SORBATE, SODIUM BENZOATE, PHENOXYETHANOL, SORBIC ACID, CHLORPHENESIN, ISOPENTYLDIOL, PENTAERYTHRITYL TETRA-DI-T-BUTYL HYDROXYHYDROCINNAMATE, PVP, BENZOIC ACID, FRAGRANCE (PARFUM), LINALOOL, BENZYL SALICYLATE, COUMARIN, LIMONENE, GERANIOL, ALPHA-ISOMETHYL IONONE, CITRONELLOL, HYDROXYCITRONELLOL.

View full details

Proven Results

Neem Fortifying Complex

Repair | Vegan

Rebuild and restore weak, damaged hair with a transformative proprietary formula designed to reduce breakage and strengthen from within. Rediscover balance and vitality by wrapping hair in nourishing care for renewed strength and elasticity.

Key Ingredients

Neem Plant
- Enhances strength and resilience.
- Prevents split ends.
  • Neem Fortifying Complex

How-to

  1. Distribute a small amount throughout damp or dry hair and leave in.

Best For

  • Repair
  • All Hair Types
  • Shine
  • Frizz
  • Heat Protection
  • Vegan

Overall rating: 4.7414966 / 5 from 294 reviews.

AI Generated Review Summary

This leave-in serum strengthens fragile, damaged hair, leaving it soft, manageable, and shiny. Customers appreciate the noticeable difference in texture and the beautiful shine it adds. The Neem oil and restorative botanicals fortify hair from the inside-out, making it healthier and thicker.

Summary topics

  • Product Results (6%): Customers loved the results of this product, as it left their hair feeling soft and manageable.
  • Hair Feel (10%): Customers raved about how this product made their hair feel incredibly soft and shiny, with a noticeable boost in shine.
  • Neem Oil (5%): Customers keep praising the Neem oil, saying it is top-notch and their new favorite.
  • Hair Shine (5%): Customers expressed satisfaction with the Neem Plant Silk Serum for adding a beautiful shine to their hair.
  • Noticeable Difference (7%): Customers expressed appreciation for the noticeable difference in the texture of their hair after using the product.

Review topics: [].

Review highlights

  • "The silk serum is great … makes my hair feel smooth and shiny." — Karen F.
  • "It makes my hair feel so soft and shiny." — Carly G.
  • "It gives me hair that beautiful shine all day long." — Samantha M.

Reviews

Life saver!

"We had a camper fire and my hair was singed in the process. I tried to find a product that would heal my hair and also make it stronger. Healing Strength Silk Serum did not disappoint. My stylist is in shock as to how quickly it healed my singed hair. It has definitely been a life saver!"

— Kristin J. (5/5)

Lanza Strength Products

"Every time I try to use a different product from another brand it always seems to damage my hair. Lanza always keeps my hair healthy, strong, and shiny!"

— Emily H. (5/5)

Formula changes make all lanza products not worth price

"They changed the formula of this and all their products): I no longer will be buying lanza products due to formula changes. They no longer work well and they're way too expensive to be buying when the products are worse than drugstore."

— Taylor D. (1/5)

Love💕

"I love this serum! It’s not heavy yet it calms my hair so there’s hardly any frizz. My hair looks and feels so much smoother. And it smells like heaven."

— Victoria D. (5/5)

Transforms my hair from dry-to-the-touch

"Transforms my hair from dry-to-the-touch to a lovely soft and smooth texture. The fragrance is light and appealing when applying and barely there after drying. Love this product!"

— Patricia R. (5/5)

Great so far

"I really like all 3 products that I received and I may have to abandon my other products and start using this brand. I need to try the shampoo and conditioner again."

— Suzanne A. (5/5)

Trauma treatment

"Great products! Everything I’ve ever tried I’ve loved. My hair feels more hydrated and the products smell amazing too!"

— Lauren H. (5/5)

Works really well

"This product works great in my hair to keep it smooth and healthy"

— Jackie (5/5)

Great product

"Makes my hair very soft and smooth"

— Susan C. (5/5)

Dale Faulkenberry

"Love all of the Lanza products!!"

— Dale F. (5/5)

Q&A