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Let Me Be Semi-Definitive Single Step Hair Sealant – Formaldehyde-Free Smoothing & Thermal Protection – 33.8 oz (1000 g)

Name: Let Me Be Semi-Definitive Single Step Hair Sealant – Formaldehyde-Free Smoothing & Thermal Protection – 33.8 oz (1000 g)
Brand: Let Me Be
SKU: MKPBR2024-2450
Price: 93.56 USD
Availability: InStock

by Let Me Be

$93.56 - $93.56

$93.56

$93.56 - $93.56

$93.56

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Let Me Be Semi-Definitive Single Step Sealant

Elevate your hair care ritual with the Let Me Be Semi-Definitive Single Step Sealant, a sophisticated formula designed to deliver professional-grade alignment with unparalleled comfort. This advanced treatment realigns and treats the hair fiber, providing a lightweight, radiant finish without the use of formaldehyde.

Engineered for modern lifestyles, this single-step solution eliminates the need for mandatory anti-residue pre-washing, streamlining the process for both salon professionals and experienced at-home users. With its heat-activated technology and nourishing botanical complex, it ensures a disciplined, frizz-free look that preserves the hair's natural vitality and movement.

Why you’ll love it

Zero Formaldehyde Comfort

Experience a gentle application process with no harsh odors or eye irritation, prioritizing your wellness and comfort.

Natural Gradual Smoothness

Achieves impeccably aligned and disciplined hair without the artificial "heavy" look, maintaining a fluid and natural aesthetic.

Color Preservation Technology

Specifically formulated to be safe for blondes and color-treated hair, helping to maintain vibrant tones while preventing fading.

CLX-E® Thermal Protection

Features an intelligent thermo-active technology that activates with heat to seal the cuticles and prolong the smoothing effect.

Deep Fiber Reconstruction

Infused with high-performance actives that nourish and strengthen the hair from the first application.

Single-Step Efficiency

A practical and fast-acting formula that bypasses the need for traditional clarifying pre-washes in most cases.

Product highlights

Collagen: Provides essential structural support, improving hair elasticity and helping to replenish mass lost to chemical processes. Phyto Keratin: A plant-based protein complex that works to reconstruct the hair fiber, restoring strength and reducing chronic frizz. Shea Butter: A powerful emollient that deeply nourishes and repairs the lipid barrier, protecting the hair from thermal damage. CLX-E® Complex: An advanced thermo-active ingredient that creates a protective shield around the strand, reducing volume and enhancing shine.

Allergen Warnings / Cautions: Professional use is recommended; however, experienced users may apply the product at home by strictly following the provided instructions. A mandatory strand test must be performed 3 to 4 days prior to application, especially on blonde, colored, or sensitized hair. Avoid contact with the scalp. For blonde or fine hair, always use lower iron temperatures (up to 350°F / 180°C) and fewer passes to prevent damage. Do not apply to children, pregnant women, or lactating women. In case of contact with eyes, rinse abundantly with water. If irritation occurs, discontinue use and seek medical advice. Founded in 2015 in Marília, São Paulo, Let Me Be has rapidly ascended as one of the most influential Brazilian brands in the global hair care industry. Driven by a mission to keep pace with the constant evolution of beauty technology, the brand focuses on delivering high-performance formulas that satisfy the rigorous standards of professional stylists and home users alike. With a strategic international presence—including a dedicated branch in Portugal and distribution across Europe, North America, and Asia—Let Me Be brings authentic Brazilian hair expertise to the world stage.

Product information

Is the Let Me Be Single Step Sealant compatible with other chemical treatments?

It is not compatible with Henna (Henê), Ammonium Thioglycolate, Hydroxides, or Guanidine. Always perform a strand test to verify compatibility with your hair's history.

Can I apply this treatment on the same day as highlights or bleaching?

No. We recommend applying the sealant first and waiting at least 30 days before undergoing any other chemical bleaching or highlighting procedures.

How long do the smoothing and alignment results typically last?

The durability depends on the hair type and maintenance routine. On average, the smooth effect and volume reduction last between 1 to 2 months.

Can I retouch my hair color after using this treatment?

Yes, color retouching is possible. However, we recommend using a developer with a maximum of 20 volumes. Avoid 30 or 40 volumes to protect the hair fiber.

Does this product require a special pre-wash shampoo?

No, this is a single-step formula. If the hair is free of heavy oils or styling residues, you can apply it directly. Otherwise, a simple wash with a daily shampoo is sufficient.

Disclaimer: For external use only. Patch test before use and discontinue use if irritation occurs. Individual results may vary. Product packaging may be labeled in Portuguese. Our Brazilian-brand products are sourced in Brazil and are regularized with ANVISA (Agência Nacional de Vigilância Sanitária), Brazil's national health authority, under the applicable regulatory framework for each product category. ANVISA regularization applies to the Brazilian market and is not equivalent to U.S. FDA approval. See our full Disclaimers & Important Information.