--- product_id: 381463459 title: "Let Me Be Protein Smoothing Treatment Single Step1L | Brazilian Keratin Treatment | Progressive Brush | Smoothing System" brand: "let me be" price: "¥37398" currency: JPY in_stock: true reviews_count: 13 category: "Let Me Be" url: https://www.desertcart.jp/products/381463459-let-me-be-protein-smoothing-treatment-single-step1l-brazilian-keratin store_origin: JP region: Japan --- # Intensive Shine Frizz Control Moisturizing Power Let Me Be Protein Smoothing Treatment Single Step1L | Brazilian Keratin Treatment | Progressive Brush | Smoothing System **Brand:** let me be **Price:** ¥37398 **Availability:** ✅ In Stock ## Summary > ✨ Unlock Your Hair's Potential with Let Me Be! ✨ ## Quick Answers - **What is this?** Let Me Be Protein Smoothing Treatment Single Step1L | Brazilian Keratin Treatment | Progressive Brush | Smoothing System by let me be - **How much does it cost?** ¥37398 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/381463459-let-me-be-protein-smoothing-treatment-single-step1l-brazilian-keratin) ## Best For - let me be enthusiasts ## Why This Product - Trusted let me be brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **One-Step Wonder:** Experience the power of Brazilian Keratin in a single application. - • **Rich in Protein:** Nourish and repair your hair from the inside out. - • **Frizz-Free Formula:** Say goodbye to frizz and hello to manageable hair. - • **Transform Your Tresses:** Achieve soft, luscious, and straight hair effortlessly. - • **Versatile for All Hair Types:** Perfect for curly, dry, or frizzy hair—everyone can shine! ## Overview Let Me Be Protein Smoothing Treatment is a Brazilian Keratin treatment designed to transform your hair in just one step. This powerful formula moisturizes, straightens, and controls frizz, making it suitable for all hair types. With its rich protein content, it repairs and revitalizes hair, leaving it soft, shiny, and manageable. ## Description PROTEIN SMOOTHING PASSO ÚNICO – FORMALDEHYDE-FREE HAIR SMOOTHING TREATMENT Achieve a complete hair transformation with Let Me Be Protein Smoothing Passo Único. This innovative, formaldehyde-free treatment delivers remarkably smooth, straight hair from the very first application, providing outstanding results with greater comfort. Specially developed to reduce excess volume and control frizz, Protein Smoothing Passo Único leaves the hair beautifully aligned, lightweight, and naturally flowing. Recognized as a favorite in Brazil, this professional treatment not only smooths the hair but also helps restore the hair fibre and protect it against visible signs of ageing and damage. DIRECTIONS FOR USE Shake the bottle well before use to ensure the formula is thoroughly mixed. No pre-wash is required. If the hair contains oils, masks, or leave-in products, wash it only with a regular daily shampoo. Apply the product to dry hair. Do not apply or rub the product onto the scalp. PROCESSING TIME Up to 50 minutes for blonde, colored, gray, or fine hair. Up to 60 minutes for thick or resistant hair. AFTER PROCESSING Rinse thoroughly, removing 100% of the product from the hair. Apply a heat protectant before using heat. Blow-dry the hair completely. Flat iron thin sections 15–20 passes each. Blonde, colored, gray, or fine hair: Up to 180°C (356°F). Thick or resistant hair: Between 210°C and 250°C (410°F–482°F). Rinse the hair again and finish with PH Mask to restore the hair's pH balance and maintain hydration. Once the process is complete, the hair will be smooth, sealed, soft, and shiny. RECOMMENDED FOR Suitable for all hair types. PROFESSIONAL TIPS For blonde or color-treated hair, reduce both the processing time and the number of flat iron passes. Adjust the flat iron temperature according to the hair's condition and texture. For blonde, colored, or fine hair, you may tone the hair after the treatment using a toner to achieve a more balanced and vibrant shade. BENEFITS Professional smoothing results from the very first application. Formaldehyde-free formula with no burning sensation or strong odor. Instantly reduces frizz and volume for smoother, more disciplined hair. Provides natural movement and long-lasting shine. Deeply hydrates and strengthens the hair, improving resistance and durability. Helps protect against damage and premature hair aging. Easy one-step application with no mandatory clarifying shampoo pre-wash. SPECIFICATIONS Professional-use product. One-step smoothing system with no mandatory pre-wash required. Net Content: 500 ml (1 L). PRECAUTIONS For external use only. Avoid contact with the eyes. Store in a cool, dry place away from direct sunlight and excessive heat. Keep out of reach of children. If irritation occurs, discontinue use immediately. Follow all usage instructions carefully to achieve the best results and ensure safe application. Review: Good quality - 💯 good products really amazing good results helps to make ur hair healthier smooth soft and shining Review: Wawoo - Best product ever Nice smell Easy to use And perfect effect ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07RS1M4V3 | | Best Sellers Rank | #15,460 in Beauty ( See Top 100 in Beauty ) #10 in Chemical Hair Straighteners | | Brand | Let Me Be | | Brand Name | Let Me Be | | Country of Publication | Brazil | | Customer Reviews | 4.5 out of 5 stars 2,035 Reviews | | Hair Type | Curly, Dry | | Hair type | Curly, Dry | | Item Form | Liquid | | Item Weight | 1.09 Kilograms | | Item form | Liquid | | Item weight | 1.09 Kilograms | | Manufacturer | Let Me Be | | Manufacturer Part Number | LE | | Material Features | Organic Straightening | | Number of Items | 1 | | Package Size Name | Single Step | | Product Benefits | Conditioning, Relaxing, Shining, Smoothing, Straightening, Strengthening | | Product benefits | Conditioning, Relaxing, Shining, Smoothing, Straightening, Strengthening | | Scent Name | Unscented | | Set Name | Single Step | | Special Ingredients | brazilian keratin | | UPC | 783764502828 | | Unit Count | 33.8 Fluid Ounces | ## Product Details - **Brand:** Let Me Be - **Hair type:** Dry - **Item weight:** 1.09 Kilograms - **Product benefits:** Straightening, Smoothing, and Strengthening Hair - **Item form:** Liquid ## Images ![Let Me Be Protein Smoothing Treatment Single Step1L | Brazilian Keratin Treatment | Progressive Brush | Smoothing System - Image 1](https://m.media-amazon.com/images/I/41UwzDWrvpL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Can I see the label of ingredients?** A: Modo de usar: Tenga en cuenta que debe realizar la prueba de la mecha con al menos 3 o 4 días de anticipación. Agite bien el frasco antes de usarlo. La aplicación del producto no necesita un prelavado con el champú anti-residuos. Solo es necesario lavar el cabello previamente con champú habitual (de uso diario) si el cabello es con crema, spray, sin aclarado, aceite o cualquier otro producto. En este caso, después del lavado, el champú debe retirarse al 100% y secarse al 100% antes de aplicar el producto. Para un resultado perfecto, aplicar el producto directamente sobre el cabello seco, esperar una pausa de hasta 50 minutos para cabellos rubios, teñidos, grises o decolorados o hasta 1: 30h para cabellos normales / resistentes. Enjuagar con agua fría retirando el producto al 100% del cabello. Secar 100% (no cepillar) Aplana los mechones delgados varias veces hasta que veas que la cutícula está sellada de 20 a 30 veces, según el tipo de cabello. Para un mejor resultado, prefiera una tabla de titanio. Para cabello normal, grueso o resistente use 230ºc o 450ºF. En rubio, gris o de color, utilice la tabla con una temperatura de 170ºC o 340F. CONSEJO PARA RUBIAS * El cabello se puede teñir inmediatamente después de la aplicación si es necesario (sin amoníaco). * Para tonos superiores a 7 o platino, puedes mezclar con Protein Smoothing Passo Único un tono de tu elección en la proporción de 80ml del progresivo / 20g del shader. * Para lograr un resultado nacarado, mezclar Progressiva con la mascarilla Champagne en la proporción de 80ml de la progresiva + 20g de la mascarilla Champagne. Mais sobre o texto originalÉ necessário fornecer o texto original para ver mais informações sobre a tradução Enviar feedback Painéis laterais **Q: What are the ingredients of this product?** A: According to the manufacturer, this is the Composition: Aqua, Disodium EDTA, Polyquaternium-67, Cetrimonium Chloride, PEG-90M, Cetearyl Alcohol, Behentrimonium Methosulfate, Shea Butter Cetyl Esters, Isopropyl Palmitate, Methylchloroisothiazolinone, Methylisothiazolinone, Methicone, Polyquaternium Hydroly, Lacticzed Acticide Keratin, Hydrolyzed Adansonia Digitata Seed Extract, Hydrolyzed Collagen, Parfum, Linalool, Limonene, Butylphenyl Methylpropional, Coumarin, Hexyl Cinnamal, Citronellol. *The presence of Carbocysteine in the composition is only as a PRESERVATIVE and not as a smoothing agent. The active ingredient of the brush is umblend of acids, amino acids and proteins with the presence of lactic acid. **Q: Cuanto tiempo hay que esperar para ponerselo despues de teñirse** A: Hola, después de teñir solo tienes que esperar 2 semanas para aplicar este tratamiento. Saludos. **Q: Me dijeron que solo debe usarse es con alaciadora de placas de titanio** A: Hola! Puedes utilizar la alaciadora de tu preferencia. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good quality *by J***O on 28 September 2025* 💯 good products really amazing good results helps to make ur hair healthier smooth soft and shining ### ⭐⭐⭐⭐⭐ Wawoo *by V***G on 23 February 2024* Best product ever Nice smell Easy to use And perfect effect ### ⭐⭐⭐⭐⭐ It works so well *by K***A on 7 October 2023* It made my hair look so shiny and it is easy to use 😁 ## Frequently Bought Together - Let Me Be Protein Smoothing Treatment Single Step1L | Brazilian Keratin Treatment | Progressive Brush | Smoothing System - Let Me Be ProSalon Post Protein Home Care Shampoo - After Protein Maintanence Hair Care Shampoo 240ml-Brazil --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/381463459-let-me-be-protein-smoothing-treatment-single-step1l-brazilian-keratin](https://www.desertcart.jp/products/381463459-let-me-be-protein-smoothing-treatment-single-step1l-brazilian-keratin) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-28*