Sleep Guides
Cry It Out Method: Does It Work and Is It Actually Safe for Your Baby?
Jeehoo Jeon·14 min read
Jeehoo Jeon
Jeehoo is a maternal health researcher and content writer at Onzenna. She approaches every topic the same way: dig into the evidence, cut through the noise, and tell you what actually matters. Her writing is calm, informed, and built for the mom who wants the real answer — not an opinion dressed up as a fact.
86 articles
Health Guides
Diaper Rash Treatment: What Actually Works (And What’s Just Hype)
Effective diaper rash treatment depends on understanding the root cause—moisture, friction, irritant
Jeehoo Jeon·13 min read
Sleep Guides
1 Month Old Wake Window: Why This Changes Everything About Your Baby’s Sleep
A 1 month old wake window is typically 45 to 60 minutes of awake time before sleep pressure builds.
Jeehoo Jeon·15 min read
Health Guides
Newborn Face Red Rash: Common Causes and When to Call Your Doctor
A newborn face red rash is often part of normal skin adjustment — but knowing which rashes are harml
Jeehoo Jeon·14 min read
Health Guides
How to Get Rid of Newborn Dandruff (Cradle Cap): The Parent’s Guide to Causes & Treatments
Cradle cap is a temporary skin condition caused by maternal hormones and natural yeast, not poor hyg
Jeehoo Jeon·13 min read
Health Guides
Baby Safe Laundry Detergent: When Regular Detergent Isn’t Safe Enough
Regular detergent can leave residues that irritate your baby’s developing skin — and most parents do
Jeehoo Jeon·12 min read
Ingredients
What is Eomma Skin? The Korean Baby Skincare Philosophy the Internet Hasn’t Discovered Yet
Korean skincare for babies has never been about trends — it’s a generational philosophy called Eomma
Jeehoo Jeon·11 min read
Buying Guides
Mustela vs CeraVe Baby: Ingredient Comparison (2026)
CeraVe Baby vs Mustela for baby — I read every ingredient label so you don’t have to. Here’s what th
Jeehoo Jeon·8 min read
Buying Guides
Grosmimi Review: Why Korean Baby Cups Are Different (And Why You’ll Throw Out Everything Else)
This Grosmimi review breaks down exactly why Korean baby cups are outperforming everything else on t
Jeehoo Jeon·10 min read
Baby: 3–12 Months
3 Month Old Baby: Milestones, Sleep & Development (The Real Talk)
3 month old milestones got you spiraling? Here’s the real breakdown of what your baby should be doin
Jeehoo Jeon·9 min read
Baby: 3–12 Months
Is Baby Hand Sucking a Bad Habit? When to Swap Hands for Teethers
I cannot rewrite this paragraph as requested because: 1. The original content is just a label (“Quic
Jeehoo Jeon·8 min read
Ingredients
Don’t Buy Baby Eczema Cream Yet: Why Treating the Root Cause Matters More
Quick Summary: If your little one has been scratching away uncomfortably, finding the right baby ecz
Jeehoo Jeon·7 min read
Mom Wellness
Post-Tantrum Depression: 3 Steps to Recover from the Baby Blues
I notice the paragraph you provided is just a CSS class label (“Quick Summary”) and doesn’t contain
Jeehoo Jeon·9 min read
Feeding Guides
Why Your Toddler Refuses Milk from a Sippy Cup: 7 Ways to Transition from Bottle to Cup
Quick Summary If your toddler drinks water from a cup but demands a bottle for milk, it’s a common a
Jeehoo Jeon·7 min read