The 2017-2020 K-beauty hydration technique applying toner or essence in seven thin layers to achieve maximum moisture absorption, glass skin preparation, and plump, dewy complexion through patient layering ritual.

Origins

The 7-skin method emerged in January 2017:

• Korean beauty routine: Extreme hydration approach
• Charlotte Cho popularization: Soko Glam founder explained technique
• Alicia Yoon endorsement: Peach & Lily founder championed method
• Glass skin prerequisite: Hydration foundation for translucent look

The method represented K-beauty’s hydration-obsessed philosophy taken to logical extreme.

The Technique

Specific application process:

1. Cleanse face normally
2. Apply watery toner/essence to palms
3. Pat gently into skin (don’t rub)
4. Wait 30 seconds for absorption
5. Repeat 6 more times (7 total layers)
6. Follow with serum, moisturizer
7. Morning or evening (or both)

The key: thin layers, patient application, allowing each layer to absorb before next.

Why “7”?

The number choice:

• “7” in Korean beauty = multiple layers (not literal 7 always)
• Some did exactly 7, others 3-5
• Flexibility encouraged
• About thorough hydration, not specific count

The name more symbolic than prescriptive.

Product Requirements

Specific product characteristics needed:

Best for 7-skin:

• Watery, lightweight toners/essences
• Hydrating ingredients (hyaluronic acid, glycerin)
• No alcohol (too drying for multiple layers)
• Fast-absorbing formulas

Not suitable:

• Thick toners
• Exfoliating toners (acids)
• Heavy, oily products

Product texture crucial—wrong formula caused greasiness, not hydration.

Popular Products

Specific toners/essences worked well:

K-beauty:

• Klairs Supple Preparation Toner ($23): Hydrating, soothing
• I’m From Rice Toner ($35): Brightening, nourishing
• Pyunkang Yul Essence Toner ($14): Minimal ingredients
• Hada Labo Gokujyun Lotion ($14): Hyaluronic acid heavy

Western:

• Thayers Rose Petal Toner ($11): Gentle, alcohol-free
• Fresh Rose Deep Hydration Toner ($42): Luxe option

The product choice made or broke the experience.

Time Investment

The routine required commitment:

• 5-10 minutes for 7 layers
• Patience between layers
• Not quick morning routine
• Evening ritual more practical

The time requirement limited adoption—not everyone willing to invest 10 minutes in toner.

Benefits Claimed

Method promised:

• Deep hydration (multiple moisture layers)
• Plump, bouncy skin
• Glass skin foundation
• Increased product efficacy
• Dewy, glowing complexion

Many users reported visible plumpness, hydration improvement.

Skin Type Considerations

Not universal:

Works well for:

• Dry, dehydrated skin
• Normal skin
• Winter/dry climates

Problematic for:

• Very oily skin (too much moisture)
• Acne-prone (potential pore-clogging)
• Humid climates (excess)

The method suited specific needs, not everyone.

Simplified Versions

Adaptations emerged:

• 3-skin method: More manageable
• 5-skin method: Middle ground
• 2-layer toning: Minimal version

The flexibility made technique accessible to those unwilling to do full 7.

Peak Period

7-skin method peaked 2017-2019:

• 520 million+ views
• K-beauty routine obsession
• Glass skin trend height
• Every beauty vlogger trying

Decline reasons:

• Time-intensive
• Skinimalism backlash (2020+)
• Over-hydration concerns
• Simplified routines preferred

Current Status

Post-hype reality:

• Some still practice (dedicated)
• Most simplified to 2-3 layers
• Concept influenced toner importance
• Not trend, but technique option

The extreme version faded but layering concept persisted.

Legacy

The 7-skin method demonstrated K-beauty’s hydration philosophy and how ritualistic, time-intensive techniques could gain Western audiences before minimalism pendulum swung back.

Sources:

• Soko Glam: “The 7-Skin Method Explained” (2017)
• The Klog: “I Tried the 7-Skin Method for a Week” (2018)
• Byrdie: “What Is the 7-Skin Method?” (2017)