ReNu Smoothing Shampoo (1000ml) (USA)

Nu Skin ReNu Smoothing Shampoo 1000ml — Sulfate-Free Smoothing Shampoo for Frizzy, Unruly Hair

Frizz is essentially your hair's cuticle layer standing up instead of lying flat — and the wrong shampoo makes it worse. Sulfate-based shampoos rough up the cuticle during cleansing, which means you're creating frizz in the very first step of your routine. ReNu Smoothing Shampoo takes the opposite approach: a sulfate-free formula that gently cleanses while actively smoothing the cuticle, so your hair comes out of the shower already on its way to sleeker, more manageable results. The 1000ml professional size means you're getting months of frizz-free washes from a single bottle.

Hair frizz is caused by damaged or raised cuticles absorbing moisture from the air unevenly. Healthy hair cuticles lie flat like roof shingles, reflecting light (shine) and keeping moisture balanced. Damaged cuticles stand open, absorbing humidity in random spots and swelling unevenly — that's frizz. Sulfate-free shampoos help because they don't further damage the cuticle during cleansing. Smoothing agents in the formula actively help lay the cuticle flat, and the cumulative effect of gentle washing means less cuticle damage over time.

Key Benefits

• Anti-frizz cleansing — Smooths the cuticle during washing instead of roughing it up
• Sulfate-free formula — Gentle surfactants that don't strip or damage hair fiber
• Lasting smoothness — Cumulative use improves hair's baseline smoothness over weeks
• Color-safe — Won't strip or accelerate fading of hair color
• Professional 1000ml size — 4-6 months of daily washes from a single bottle

Key Ingredients

Formulated to cleanse and smooth simultaneously — turning the washing step into a treatment step.

• Sulfate-Free Surfactants — Mild cleansing agents that remove dirt and oil without disrupting the cuticle layer. Less cuticle damage during washing means smoother, more manageable hair immediately out of the shower.
• Smoothing Polymers — Lightweight film-forming agents that coat each strand, helping the cuticle lie flat. These polymers also reduce friction between strands, which decreases tangling and the breakage that comes from aggressive detangling.
• Panthenol — Penetrates the hair shaft to add moisture and flexibility from within. Better-hydrated hair is less prone to frizz because it doesn't need to absorb as much moisture from the air.
• Conditioning Complex — Smooths and softens hair during the cleansing step, so your hair starts the conditioning process before you even apply conditioner.

What Sets It Apart

The ReNu Smoothing line is built on a simple principle: if you stop damaging hair during cleansing, you spend less time and effort trying to fix it afterward. Most people with frizzy hair invest in heavy serums, leave-in treatments, and heat styling to manage their frizz — but their shampoo is making the problem worse twice a day. Switching to a smoothing shampoo attacks frizz at the source.

The 1000ml size is a real value advantage. Most salon-brand smoothing shampoos come in 250-350ml bottles at comparable per-bottle prices. Getting 3-4x the product means 3-4x fewer purchases, fewer bottles to recycle, and a lower per-wash cost. The professional format is also more practical — no running out mid-week.

How It Compares

Comparison based on publicly available product information as of 2025. Formulations may change.

How to Use

Wet hair thoroughly. Apply a small amount and massage through hair from roots to ends, working gently — no aggressive scrubbing, which damages the cuticle. Rinse thoroughly. Follow with ReNu Smoothing Conditioner for best results. For maximum frizz reduction, rinse with cool water (seals the cuticle flat). On humid days, the smooth cuticle created during washing helps your hair resist absorbing excess moisture throughout the day.

Best For

ReNu Smoothing Shampoo is designed for anyone battling frizz — whether that's naturally curly or wavy hair that poofs in humidity, straight hair that develops flyaways, or chemically treated hair that's lost its smoothness. It works well for medium to thick hair textures. If you have very fine hair and need volume, the ReNu Volumizing Shampoo is a better match — smoothing formulas can lay fine hair too flat.

Frequently Asked Questions

Q: Will this straighten my curly hair?

A: No — it won't change your natural texture. It smooths the cuticle to reduce frizz and enhance your natural pattern, whether that's curly, wavy, or straight. Curly hair will still be curly, but with better definition and less puffiness.

Q: How is this different from the Volumizing Shampoo?

A: Different goals. Smoothing Shampoo lays the cuticle flat for frizz control — it creates sleekness. Volumizing Shampoo lifts hair from the root for body — it creates fullness. Choose Smoothing for frizz, Volumizing for flat hair. They're not interchangeable.

Q: Does it work in high humidity?

A: Yes — a smoother cuticle is more resistant to humidity absorption, which is the primary cause of frizz. You'll notice your hair maintains its styled look longer in humid conditions when using a smoothing system consistently.

Q: How long does the 1000ml bottle last?

A: With daily use on medium-length hair, expect 4-6 months. For thicker or longer hair requiring more product per wash, 3-4 months.

Q: Can I use this with other smoothing products (serums, oils)?

A: Yes — a smoothing shampoo creates a better foundation for other smoothing products. Start with the shampoo, use the matching conditioner, then apply a lightweight smoothing serum or oil to damp hair before styling.

Shipping & Payment

Payment Methods: Credit Card, Apple Pay, Google Pay, PayPal, PayPal Pay Later

Shipping: US-wide delivery, typically 3-7 business days

Shipping Cost: US$2.99 flat rate

Free Shipping: On orders over US$79

References

• American Academy of Dermatology — Tips for Healthy Hair
• PubMed — Effects of surfactants on hair fiber
• Nu Skin Official — ReNu Smoothing Shampoo Product Page

NuBest Skin is an independent Nu Skin Brand Affiliate. This product listing is not produced or endorsed by Nu Skin Enterprises, Inc.