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Korean skincare can look intimidating. Scroll through social media and glowing skin seems to require a double cleanse, toner, essence, ampoule, serum, eye cream, moisturizer, sleeping mask, face mist, and SPF, every single day.
But a better question than "How many steps?" is this: what does your skin actually need?
A good Korean skincare routine does not have to be long. If you're curious about RIMAN skincare but don't want a nine-product ritual, there's a simpler place to start: Booster → Serum → Booster → Cream. That's RIMAN's Boo-Se-Boo method plus a finishing moisturizer. The BooSeBoo Essential Bundle puts all three full-size products into one purchase.
The Simple RIMAN Routine at a Glance
| BOO | Dermatology Booster EX: first hydrating layer |
| SE | Dermatology Serum EX: treatment layer |
| BOO | Dermatology Booster EX: second hydrating layer |
| SEAL | Dermatology Cream: finishing moisturizer |
AM: Finish with sunscreen. PM: The cream can be your final step.
One thing to know up front: this bundle is the core treatment-and-moisturizer portion of the RIMAN Expert ritual, not a complete cleanser-to-sunscreen routine. You'll still need a cleanser, and sunscreen in the morning.
What Is Boo-Se-Boo?
Boo-Se-Boo is short for Booster, Serum, Booster:
- Boo: mist the Dermatology Booster EX
- Se: apply the Dermatology Serum EX
- Boo: mist the Dermatology Booster EX again
It's a RIMAN-specific layering method, not a traditional Korean practice that every brand follows, and not something every skincare routine requires. The logic is simple: a hydrating layer, then a treatment layer, then another hydrating layer, followed by a moisturizer.
What's Inside the BooSeBoo Essential Bundle?
The BooSeBoo Essential Bundle combines the RIMAN ICD Dermatology First Package with the RIMAN ICD Dermatology Cream. Here's what each product does.
Boo: Dermatology Booster EX (130 ml / 4.39 fl. oz.)
The Dermatology Booster EX is a lightweight hydrating mist. According to RIMAN, it contains 88% Giant BYoungPool leaf water, RIMAN's own cultivar of Centella asiatica, along with NMN and Rejuviome-R. You use it twice: as the first Boo step to prep skin, and as the final Boo step after the serum.
Se: Dermatology Serum EX (45 ml / 1.52 fl. oz.)
The Dermatology Serum EX is the treatment step. RIMAN lists 81% Giant BYoungPool leaf water, NMN (a niacinamide-related ingredient), and Fillerstin™. Used consistently, it's designed to help skin feel hydrated and look smoother, more radiant, and more even-toned.
Seal: Dermatology Cream (50 ml / 1.69 fl. oz.)
The Dermatology First Package on its own includes only the Booster and Serum. The BooSeBoo Essential Bundle adds the Dermatology Cream, the sealing step after Boo-Se-Boo.
The cream is rich but non-greasy. Our product page lists 58% Giant BYoungPool leaf water, NMN, ergothioneine and carnosine, niacinamide, adenosine, shea butter, macadamia seed oil, ceramide NP, collagen, and peptides. It's designed to help replenish moisture, support the moisture barrier, and help skin look firmer and more supple.
Brand Ingredient Story vs. Independent Evidence
Some of these names, like Giant BYoungPool and Fillerstin™, are RIMAN's own proprietary ingredients. The descriptions above reflect what RIMAN says about them. A trademarked ingredient name doesn't by itself prove a result. Ingredients such as ceramides, shea butter, glycerin-style humectants, and niacinamide are widely used in moisturizing skincare. The specific performance claims for RIMAN's proprietary ingredients come from the brand.
How to Use Boo-Se-Boo Step by Step
- Cleanse with the cleanser you already use, or a RIMAN cleanser (sold separately).
- Boo: Close your eyes and mist the Dermatology Booster EX over your face. Wait a few moments for it to absorb.
- Se: Place drops of the Dermatology Serum EX on your forehead and cheeks, then massage gently into skin.
- Boo: Once the serum has absorbed, mist the Dermatology Booster EX a second time.
- Seal: Use the spatula to scoop the Dermatology Cream. Spread it lightly and evenly over your face and neck. There's no need to massage it in.
- Morning only: Finish with sunscreen.
Why Is the Booster Used Twice?
It's about layering. The first mist is a lightweight hydration step before the serum. The second mist adds another hydrating layer after the serum, as RIMAN's sequence recommends. Then the cream goes on top to hold everything in place.
You may hear claims that the first mist "opens pores" or the second "pushes" the serum deeper. Those aren't claims we'll make. Think of it as two light layers of hydration around a treatment step.
Who Is the BooSeBoo Essential Bundle For?
The BooSeBoo Essential Bundle may be a good fit if you've said:
- "I want to try RIMAN without buying a full ritual."
- "My routine has become too complicated."
- "Hydration matters more to me than strong actives."
- "I have mature-looking skin and prefer layered moisture."
- "I already have cleansers I like."
- "I want the First Package plus its matching cream."
- "I don't want a nine-product routine."
Why It May Appeal to Mature or Dry-Feeling Skin
As skin matures, many people become more focused on comfort, dryness, a less plump-looking complexion, visible fine lines, and dull or uneven-looking tone. Not every mature complexion is dry, and mature skin doesn't automatically need rich products.
What Boo-Se-Boo offers is an approach: layer lighter hydration first, then finish with a richer moisturizer. That may appeal to anyone who dislikes relying on one heavy layer of cream alone. This is Korean skincare for mature skin that focuses on hydration and comfort, without promising to reverse aging.
Dry vs. Dehydrated-Feeling Skin
Dry skin often lacks enough oil and lipid support. Dehydrated-feeling skin may temporarily lack water, whatever your skin type. Boo-Se-Boo pairs lightweight hydration layers with a richer finishing moisturizer, which may help with both feelings. It won't solve dryness for everyone. Your environment, your cleanser, other treatments, and your individual skin all play a role.
What About "Glass Skin"?
"Glass skin" describes a look that's hydrated, smooth, luminous, and light-reflecting. It doesn't mean poreless, texture-free, or permanently glossy. Boo-Se-Boo is a hydration-focused path toward a dewy, radiant-looking complexion, not a promise of literal glass.
BooSeBoo Essential Bundle vs. Dermatology First Package
"Why wouldn't I just buy the First Package?" Here's the difference:
| Dermatology First Package | BooSeBoo Essential Bundle | |
|---|---|---|
| Booster EX | Yes | Yes |
| Serum EX | Yes | Yes |
| Dermatology Cream | No | Yes |
| Boo-Se-Boo steps | Yes | Yes |
| Finishing moisturizer included | No | Yes |
| Price* | $102.56 | $170.94 |
| Best for | Someone who already has a moisturizer | Someone who wants Boo-Se-Boo plus the matching cream |
Bought separately, the Dermatology First Package ($102.56) and Dermatology Cream ($68.38) total $170.94, the same as the bundle. So the bundle's advantage is convenience: the full Boo-Se-Boo-and-seal routine in one purchase.
*Prices were current when this article was prepared and may change.
Do You Need the Full RIMAN Ritual?
No. If you already have a cleanser, a sunscreen, and products you enjoy, you can introduce RIMAN at the treatment-and-moisturizer stage. You don't need to throw out every non-RIMAN product you own.
The full RIMAN ICD routine sets add more steps, such as cleansers, mists, gels, and, depending on the set, sunscreen. Neither option is automatically better:
- Essential Bundle = the treatment core
- Larger ritual set = a more complete RIMAN system
To compare, browse our Riman ritual sets or read How to Use RIMAN Ritual Sets.
How to Add Boo-Se-Boo to Your Existing Routine
Your current routine:
Cleanser → serum → moisturizer → SPF
A possible Boo-Se-Boo version:
Cleanser → Dermatology Booster EX → Dermatology Serum EX → Dermatology Booster EX → Dermatology Cream → SPF
The Dermatology Serum EX can replace your current general serum rather than adding yet another treatment layer. Likewise, the Dermatology Cream can replace your current moisturizer. More products isn't the goal; a routine that works is.
Can You Mix Boo-Se-Boo With Other Brands?
Potentially, yes. A routine doesn't have to come from one brand. Compatibility depends on your other actives, textures, product directions, and how your skin tolerates them. We can't guarantee that every retinoid, acid, vitamin C, or acne treatment layers well with it. When introducing something new, keep the rest of your routine simple.
AM vs. PM Boo-Se-Boo Routine
RIMAN's directions support using Boo-Se-Boo morning and night.
Morning
Cleanse as appropriate → Dermatology Booster EX → Dermatology Serum EX → Dermatology Booster EX → Dermatology Cream → sunscreen
The logical morning finish is the RIMAN ICD Moisture Layer Sunscreen, a broad-spectrum SPF 50+ ($37.30*). Sunscreen is sold separately and is not included in the bundle.
Evening
Remove makeup and SPF → cleanse → Dermatology Booster EX → Dermatology Serum EX → Dermatology Booster EX → Dermatology Cream
You don't need the same amount of cream morning and night. Some people prefer a lighter layer in the morning and a more generous one at night.
What About Cleansing?
The bundle starts after cleansing and doesn't include a cleanser. Keep one that works well for you, or choose a RIMAN cleanser separately, such as:
- RIMAN ICD Moisture Cleansing Oil
- RIMAN Incellderm Snow Enzyme Cleanser EX
- RIMAN ICD Balancing Gel Cleanser
- RIMAN ICD Cleansing Powder Wash
You don't need all four. For an evening double cleanse, an oil cleanser like the RIMAN ICD Moisture Cleansing Oil first can help remove sunscreen and makeup, followed by a water-based cleanser.
How Long Does It Take?
Only a few minutes, and it's much simpler than a full nine-step ritual.
What Should You Add Next, If Anything?
Everything after the first step is optional:
- Start: BooSeBoo Essential Bundle
- Add cleansing: a RIMAN cleanser that suits your skin
- Add optional hydration: the RIMAN ICD Two Phase Oil Mist or RIMAN ICD Calming Balance Gel before Boo-Se-Boo
- Add morning protection: the RIMAN ICD Moisture Layer Sunscreen
- Explore a full ritual: only if you want more steps
Not sure where you fit? Try our Find Your K-Beauty Ritual quiz. For a closer look at the booster-and-serum duo itself, read our ICD Dermatology First Package guide.
Who May Not Need This Bundle?
- You already own the First Package and Dermatology Cream. There's little reason to duplicate them unless you're restocking.
- You only want a serum. Buying individual products may make more sense.
- You strongly prefer a two-step routine. Boo-Se-Boo still adds several layers.
- You're mainly interested in Radiansome. A Radiansome routine may suit that goal better.
- You're dealing with a medical skin condition. This is cosmetic skincare, not treatment, so check with a dermatologist.
FAQ
What does Boo-Se-Boo mean?
Booster, Serum, Booster. It's RIMAN's layering method: mist the Dermatology Booster EX, apply the Dermatology Serum EX, then mist the Booster again.
What comes in the BooSeBoo Essential Bundle?
The Dermatology First Package (Booster EX 130 ml + Serum EX 45 ml) and the Dermatology Cream (50 ml).
What's the difference between the BooSeBoo Bundle and the Dermatology First Package?
The bundle adds the Dermatology Cream. The Dermatology First Package includes only the Booster and Serum.
Does the bundle include a cleanser?
No. Use your own cleanser or choose a RIMAN cleanser separately.
Does the bundle include sunscreen?
No. In the morning, finish with a sunscreen such as the RIMAN ICD Moisture Layer Sunscreen, sold separately.
Can I use Boo-Se-Boo morning and night?
Yes. RIMAN's directions support both. Add sunscreen in the morning.
Is Boo-Se-Boo good for mature skin?
It may be a good fit if your mature skin enjoys layered hydration and a richer finishing cream. Results vary from person to person.
Can I use Boo-Se-Boo with other skincare brands?
Often, yes. Check product directions, watch how your skin responds, and introduce one new product at a time.
Do I need the full RIMAN ritual?
No. You can start with the treatment-and-moisture core and expand later only if you want to.
What should I buy after the BooSeBoo Essential Bundle?
Only what fills a real gap: usually a cleanser you like and a morning sunscreen, then optional hydration steps.
Bottom Line
You don't have to start with a giant RIMAN ritual. Start with the core treatment-and-moisture steps, keep the cleanser you already like, add sunscreen in the morning, and expand later only if you want to.
Booster. Serum. Booster. Cream.
Shop authentic RIMAN ICD skincare at KBeauty-USA.com.
