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Special protection during the day

This is arguably the most important step in your morning skincare routine. Sun protection helps defend your skin against harmful UV rays that cause dark spots, skin damage, fine lines, wrinkles, and premature aging.

10. SUN PROTECTION (AM)

[ The final step of your morning skincare routine, before applying makeup ]

Today, many moisturizers, foundations, and BB/CC creams contain SPF. However, relying solely on makeup or moisturizers with SPF is usually not enough to ensure proper UV protection. To achieve adequate defense, you need approximately 1/4 teaspoon (or 2 mg per cm²) of dedicated sunscreen for your face. Because SPF in hybrid products is often diluted, we always recommend applying a dedicated sunscreen layer.

Unlike many traditional Western formulas, Korean sunscreens are extraordinarily lightweight and weightless on the skin. They absorb quickly, leave no greasy residue, and wear beautifully under makeup. On low-maintenance days, you can even wear them on their own as a hydrating base!

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SUN RAYS — UV, UVA & UVB

UV (Ultraviolet Radiation)

A form of radiation emitted by the sun. It can damage cellular DNA within skin cells and increase the risk of skin cancer.

UVA (Aging Rays)

Has a longer wavelength and penetrates deep into the dermal layer of the skin. UVA degrades collagen, leading to premature aging, loss of elasticity, hyperpigmentation, and long-term DNA damage.

UVB (Burning Rays)

Has a shorter wavelength and affects the superficial layers of the skin. It is the primary cause of sunburn, surface redness, and temporary dark spots.

Ingredients offering broad-spectrum protection (UVA & UVB):

Dioxybenzone, Oxybenzone, Sulisobenzone, Titanium Dioxide*, Zinc Oxide*
*Mineral (physical) filters; may leave a slight white cast depending on skin tone.

Understanding Protection Factors

Sun Protection Factor (SPF)
SPF measures protection against UVB rays. In theory, it indicates how much longer your skin can stay in the sun without burning when the product is applied correctly compared to unprotected skin.

While SPF 30 blocks approximately 97% of UVB rays and SPF 50 blocks about 98%, the key factor is proper application. Standard testing requires 2 mg per cm² of skin. Applying an inadequate layer of SPF 50 will yield significantly less protection than applying the full recommended amount of SPF 30. Generous and even application is essential!

PA Rating System (UVA Protection)
Originating in Japan and widely used in Korean skincare, the PA system rates protection specifically against UVA rays (aging rays). Ranging from PA+ to PA++++, more plus signs indicate higher protection against long-term photoaging and deep tissue damage.

HARU DECODED	KOREAN 10-STEP ROUTINE
1. CLEANSING	1. Oil-based cleanser: Dissolves oil-based impurities, SPF, and makeup. 2. Water-based cleanser: Washes away sweat, dirt, and remaining debris. [MUST HAVE] 3. Exfoliator: (1–2x/week) Sloughs off dead skin cells, unclogs pores, and refines texture.
2. PREPPING	4. Toner: Balances skin pH and hydrates to maximize absorption of subsequent steps. [RECOMMENDED]
3. EYE CARE	5. Eye serum / Cream: Formulated for delicate under-eye skin to target dark circles, puffiness, and fine lines.
4. TREATMENT & BOOST	6. Essence: Hydrates deeply and aids cellular renewal. 7. Serum & Ampoule: High-potency treatments targeting acne, hyperpigmentation, fine lines, or dullness. 8. Sheet mask: (1–3x/week) Locks in deep moisture and delivers an instant glow.
5. MOISTURIZING	9. Moisturizer: Seals in previous layers and prevents transepidermal water loss. [MUST HAVE]
6. SPECIAL CARE	10. Sun protection (SPF): Essential daytime step to shield against UV damage and premature aging. [MUST HAVE] 11. Overnight mask / Spot treatment: Supports overnight cellular repair and targeted blemish treatment.

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Special protection during the day

10. SUN PROTECTION (AM)

SUN RAYS — UV, UVA & UVB

UV (Ultraviolet Radiation)

UVA (Aging Rays)

UVB (Burning Rays)

Ingredients offering broad-spectrum protection (UVA & UVB):

Understanding Protection Factors

Also see:

6. Sun protection

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