diff --git a/src/actions/productDetail.ts b/src/actions/productDetail.ts
index 50718f5c..7cd8f3d8 100644
--- a/src/actions/productDetail.ts
+++ b/src/actions/productDetail.ts
@@ -14,11 +14,17 @@ export const getProductDetail = async (productId: number): Promise<ProductDetail
   const session = await auth();
   const accessToken = session?.accessToken;
 
+  const headers: Record<string, string> = {
+    'Content-Type': 'application/json',
+  };
+
+  if (accessToken) {
+    headers.Authorization = `Bearer ${accessToken}`;
+  }
+
   const productDetail = await fetcher(`${BASE_URL}/${TEAM_ID}/products/${productId}`, {
     method: 'GET',
-    headers: {
-      Authorization: `Bearer ${accessToken}`,
-    },
+    headers,
     next: { revalidate: 300, tags: [`products-${productId}`] },
   });
   return productDetail;
diff --git a/src/actions/review/review.ts b/src/actions/review/review.ts
index 09a88d8b..704fa4ef 100644
--- a/src/actions/review/review.ts
+++ b/src/actions/review/review.ts
@@ -17,14 +17,19 @@ export const getProductReviews = async (
   const session = await auth();
   const accessToken = session?.accessToken;
 
+  const headers: Record<string, string> = {
+    'Content-Type': 'application/json',
+  };
+
+  if (accessToken) {
+    headers.Authorization = `Bearer ${accessToken}`;
+  }
+
   const productReviews: ReviewResponse = await fetcher(
     `${BASE_URL}/${TEAM_ID}/products/${productId}/reviews?order=${option}&cursor=${cursorId}`,
     {
       method: 'GET',
-      headers: {
-        Authorization: `Bearer ${accessToken}`,
-        'Content-Type': 'application/json',
-      },
+      headers,
       next: { revalidate: 300, tags: [`reviews`] },
       cache: 'force-cache',
     },
diff --git a/src/app/_components/ProductPost/ProductForm.tsx b/src/app/_components/ProductPost/ProductForm.tsx
index 14d828d5..ed9bc142 100644
--- a/src/app/_components/ProductPost/ProductForm.tsx
+++ b/src/app/_components/ProductPost/ProductForm.tsx
@@ -12,6 +12,7 @@ import FileInput from '@/components/common/FileInput';
 import Input from '@/components/common/Input';
 import Textbox from '@/components/common/Textbox';
 import Button from '@/components/ui/Buttons';
+import { cn } from '@/lib/utils';
 import { useModalStore } from '@/store/modalStore';
 import { productSchema } from '@/types/product/productSchema';
 import { ProductDetail, ProductFormValue } from '@/types/product/productType';
@@ -96,7 +97,7 @@ const ProductForm = ({ product, mode }: { product: ProductDetail; mode: 'create'
       />
       <Button
         variant='primary'
-        className='mt-6'
+        className={cn('mt-6', isError ? 'bg-black-353542 !cursor-default' : '')}
         disabled={!isValid || isLoading || isError || (mode === 'edit' && !isDirty)}
       >
         {isError ? '존재하는 영화 제목 입니다.' : mode === 'create' ? '추가하기' : '수정하기'}
diff --git a/src/app/products/[productId]/components/AddToCompareButton.tsx b/src/app/products/[productId]/components/AddToCompareButton.tsx
index 76fda95d..48a3357c 100644
--- a/src/app/products/[productId]/components/AddToCompareButton.tsx
+++ b/src/app/products/[productId]/components/AddToCompareButton.tsx
@@ -1,5 +1,6 @@
 'use client';
 
+import { useSession } from 'next-auth/react';
 import { toast } from 'sonner';
 
 import CompareConfirmModal from '@/app/compare/components/CompareConfirmModal';
@@ -18,10 +19,18 @@ const AddToCompareButton = ({ product, className }: AddToCompareButtonProps) =>
   const { compareList, addProduct } = useCompareStore();
   const { openModal } = useModalStore();
 
+  const session = useSession();
+
   const handleAddToCompare = () => {
     const currentCount = compareList.length;
     const result = addProduct(product.id);
 
+    // 로그아웃 상태면 로그인 유도 토스트
+    if (!session.data) {
+      toast.error('로그인이 필요합니다.');
+      return;
+    }
+
     // 이미 담긴 상품인지 확인
     if (result.isDuplicate) {
       toast.info('이미 저장된 항목입니다. "비교하기"에서 확인해주세요.');
diff --git a/src/app/products/[productId]/components/ProductTriggers.tsx b/src/app/products/[productId]/components/ProductTriggers.tsx
index 6b3275de..00b03b17 100644
--- a/src/app/products/[productId]/components/ProductTriggers.tsx
+++ b/src/app/products/[productId]/components/ProductTriggers.tsx
@@ -1,6 +1,7 @@
 'use client';
 
 import { useSession } from 'next-auth/react';
+import { toast } from 'sonner';
 
 import ProductModal from '@/app/_components/ProductPost/ProductModal';
 import Button from '@/components/ui/Buttons';
@@ -17,10 +18,17 @@ const ProductTriggers = ({ product }: { product: ProductDetail }) => {
   const { data } = useSession();
   const userId = Number(data?.user.id);
 
+  const session = useSession();
+
   setProduct(product);
 
   const handleClickPostReviewModal = () => {
-    return openModal({ component: ReviewPostModal, props: { mode: 'create' } });
+    console.log(session);
+    if (!session.data) {
+      return toast.error('로그인이 필요합니다');
+    } else {
+      return openModal({ component: ReviewPostModal, props: { mode: 'create' } });
+    }
   };
 
   const handleClickPatchProductModal = () => {
diff --git a/src/app/products/[productId]/components/ReviewPostForm.tsx b/src/app/products/[productId]/components/ReviewPostForm.tsx
index 76ca2127..83b75076 100644
--- a/src/app/products/[productId]/components/ReviewPostForm.tsx
+++ b/src/app/products/[productId]/components/ReviewPostForm.tsx
@@ -6,6 +6,7 @@ import { postReview } from '@/actions/review/review';
 import FileInput from '@/components/common/FileInput';
 import Textbox from '@/components/common/Textbox';
 import Button from '@/components/ui/Buttons';
+import { cn } from '@/lib/utils';
 import { useModalStore } from '@/store/modalStore';
 import { triggerStore } from '@/store/triggerStore';
 import { ReviewFormValue } from '@/types/review/review';
@@ -22,7 +23,7 @@ const ReviewPostForm = ({ productId }: { productId: number }) => {
     register,
     handleSubmit,
     control,
-    formState: { isSubmitting, errors },
+    formState: { isLoading, errors },
   } = useForm<ReviewFormValue>({
     resolver: zodResolver(postReviewSchema),
     mode: 'onChange',
@@ -71,7 +72,12 @@ const ReviewPostForm = ({ productId }: { productId: number }) => {
           )}
         />
       </div>
-      <Button variant='primary' type='submit' disabled={isSubmitting} className='mt-[15px]'>
+      <Button
+        variant='primary'
+        type='submit'
+        disabled={isLoading}
+        className={cn('mt-[15px]', errors.rating?.message ? 'bg-black-353542 !cursor-default' : '')}
+      >
         {(errors && (errors.content?.message ?? errors.rating?.message)) || '리뷰 등록하기'}
       </Button>
     </form>
diff --git a/src/app/products/[productId]/components/ReviewSection.tsx b/src/app/products/[productId]/components/ReviewSection.tsx
index 30e5f90a..362a6c2c 100644
--- a/src/app/products/[productId]/components/ReviewSection.tsx
+++ b/src/app/products/[productId]/components/ReviewSection.tsx
@@ -28,7 +28,6 @@ const ReviewSection = ({
   const {
     items: reviews,
     triggerRef,
-    hasMore,
     reset,
   } = useInfiniteScroll({
     initialData: initialReviews,
@@ -85,10 +84,6 @@ const ReviewSection = ({
         </div>
       )} */}
       <div ref={triggerRef} className='h-20'></div>
-
-      {!hasMore && reviews.length > 0 && (
-        <p className='text-gray-9fa6b2 mb-10 text-center'>모든 리뷰를 불러왔습니다.</p>
-      )}
     </section>
   );
 };
diff --git a/src/assets/icon/Icon-scrollTop.svg b/src/assets/icon/Icon-scrollTop.svg
new file mode 100644
index 00000000..514de2c1
--- /dev/null
+++ b/src/assets/icon/Icon-scrollTop.svg
@@ -0,0 +1,7 @@
+<svg  viewBox="0 0 65 52" fill="inherit" xmlns="http://www.w3.org/2000/svg">
+<line x1="1.5" y1="-1.5" x2="21.791" y2="-1.5" transform="matrix(-0.836701 0.54766 -0.607674 -0.794187 32.4875 0)" stroke="white" stroke-width="3" stroke-linecap="round"/>
+<line x1="1.5" y1="-1.5" x2="21.791" y2="-1.5" transform="matrix(0.836701 0.54766 0.607674 -0.794187 32.0125 0)" stroke="white" stroke-width="3" stroke-linecap="round"/>
+<line x1="1.5" y1="-1.5" x2="21.791" y2="-1.5" transform="matrix(-0.836701 0.54766 -0.607674 -0.794187 32.4875 6)" stroke="white" stroke-width="3" stroke-linecap="round"/>
+<line x1="1.5" y1="-1.5" x2="21.791" y2="-1.5" transform="matrix(0.836701 0.54766 0.607674 -0.794187 32.0125 6)" stroke="white" stroke-width="3" stroke-linecap="round"/>
+<path d="M19.966 40H16.946V28.24H13.066V25.72H23.846V28.24H19.966V40ZM38.6174 32.84C38.6174 33.9467 38.4774 34.9533 38.1974 35.86C37.9308 36.7533 37.5174 37.5267 36.9574 38.18C36.4108 38.8333 35.7041 39.3333 34.8374 39.68C33.9841 40.0267 32.9774 40.2 31.8174 40.2C30.6574 40.2 29.6441 40.0267 28.7774 39.68C27.9241 39.32 27.2174 38.82 26.6574 38.18C26.1108 37.5267 25.6974 36.7467 25.4174 35.84C25.1508 34.9333 25.0174 33.9267 25.0174 32.82C25.0174 31.34 25.2574 30.0533 25.7374 28.96C26.2308 27.8667 26.9774 27.02 27.9774 26.42C28.9908 25.8067 30.2774 25.5 31.8374 25.5C33.3841 25.5 34.6574 25.8067 35.6574 26.42C36.6574 27.02 37.3974 27.8733 37.8774 28.98C38.3708 30.0733 38.6174 31.36 38.6174 32.84ZM28.1974 32.84C28.1974 33.84 28.3241 34.7 28.5774 35.42C28.8308 36.14 29.2241 36.6933 29.7574 37.08C30.2908 37.4667 30.9774 37.66 31.8174 37.66C32.6841 37.66 33.3774 37.4667 33.8974 37.08C34.4308 36.6933 34.8174 36.14 35.0574 35.42C35.3108 34.7 35.4374 33.84 35.4374 32.84C35.4374 31.3333 35.1574 30.1533 34.5974 29.3C34.0374 28.4467 33.1174 28.02 31.8374 28.02C30.9841 28.02 30.2908 28.2133 29.7574 28.6C29.2241 28.9867 28.8308 29.54 28.5774 30.26C28.3241 30.98 28.1974 31.84 28.1974 32.84ZM46.1354 25.72C47.9754 25.72 49.3154 26.12 50.1554 26.92C51.0087 27.7067 51.4354 28.7933 51.4354 30.18C51.4354 30.8067 51.3421 31.4067 51.1554 31.98C50.9687 32.54 50.6554 33.0467 50.2154 33.5C49.7887 33.94 49.2221 34.2867 48.5154 34.54C47.8087 34.7933 46.9354 34.92 45.8954 34.92H44.5954V40H41.5754V25.72H46.1354ZM45.9754 28.2H44.5954V32.44H45.5954C46.1687 32.44 46.6621 32.3667 47.0754 32.22C47.4887 32.0733 47.8087 31.84 48.0354 31.52C48.2621 31.2 48.3754 30.7867 48.3754 30.28C48.3754 29.5733 48.1821 29.0533 47.7954 28.72C47.4087 28.3733 46.8021 28.2 45.9754 28.2Z" fill="white"/>
+</svg>
diff --git a/src/components/common/Footer/Footer.tsx b/src/components/common/Footer/Footer.tsx
index 44116f42..d1bab7d1 100644
--- a/src/components/common/Footer/Footer.tsx
+++ b/src/components/common/Footer/Footer.tsx
@@ -25,7 +25,7 @@ const Footer = () => {
   if (hideFooter) return null;
 
   return (
-    <footer className='text-mogazoa-14px-400 bg-black-1c1c22 text-white-f1f1f5/60 border-black-2e2e3a relative flex flex-col justify-between border-t-2 px-5 py-10 shadow-[0_-1px_2px_0_rgba(0,0,0,1)] xl:px-[140px] 2xl:flex-row'>
+    <footer className='text-mogazoa-14px-400 bg-black-1c1c22 text-white-f1f1f5/60 border-black-2e2e3a relative flex flex-col justify-between border-t-2 px-5 py-10 shadow-[0_-1px_2px_0_rgba(0,0,0,1)] md:pb-20 xl:px-[140px] 2xl:flex-row'>
       {/* shadow-[0_-1px_2px_0_rgba(0,0,0,1)] */}
       {/* gnb 그림자 -> 아래쪽에만 생김 shadow-sm shadow-black*/}
       <div className='mr-20'>
@@ -59,7 +59,7 @@ const Footer = () => {
         <li className='2xl:text-center'>&copy; 2025 by 3team All rights reserved.</li>
       </ul>
 
-      <ul className='text-white-f1f1f5/60 relative flex items-end gap-5 md:absolute md:right-5 md:bottom-15 md:justify-end xl:right-30'>
+      <ul className='text-white-f1f1f5/60 relative flex items-end gap-5 md:absolute md:right-5 md:bottom-15 md:justify-end md:pb-10 xl:right-30'>
         {/* md:absolute md:right-5 md:bottom-15 xl:right-30  */}
         <li className='hover:text-white-f1f1f5'>
           <a
diff --git a/src/components/ui/FloatingButton.tsx b/src/components/ui/FloatingButton.tsx
index 8930d4fa..9fa92b8e 100644
--- a/src/components/ui/FloatingButton.tsx
+++ b/src/components/ui/FloatingButton.tsx
@@ -1,12 +1,16 @@
 'use client';
 
+import { useEffect, useState } from 'react';
+
 import { useSession } from 'next-auth/react';
 
 import ProductModal from '@/app/_components/ProductPost/ProductModal';
 import AddIcon from '@/assets/icon/Icon-floating.svg';
+import ScrollTopIcon from '@/assets/icon/Icon-scrollTop.svg';
 import { useModalStore } from '@/store/modalStore';
 
 const FloatingButton = () => {
+  const [isVisible, setIsVisible] = useState<boolean>(false);
   const { data: session } = useSession();
   const openModal = useModalStore((state) => state.openModal);
 
@@ -14,24 +18,49 @@ const FloatingButton = () => {
     return openModal({ component: ProductModal, props: { mode: 'create' } });
   };
 
-  if (!session) return null;
+  useEffect(() => {
+    const handleScroll = () => {
+      if (window.scrollY > 300) {
+        setIsVisible(true);
+      } else {
+        setIsVisible(false);
+      }
+    };
+    window.addEventListener('scroll', handleScroll);
+    return () => window.removeEventListener('scroll', handleScroll);
+  }, []);
+
+  const scrollTop = () => {
+    window.scrollTo({ top: 0, behavior: 'smooth' });
+  };
 
   return (
-    <div className='fixed right-10 bottom-10 z-50'>
-      <div className='group relative'>
-        <div className='bg-white-f1f1f5 absolute -left-32 ml-auto hidden max-w-xs rounded-2xl px-3 py-2 text-gray-900 shadow group-hover:block'>
-          영화 추가하기
-          <span className='border-l-white-f1f1f5 absolute top-1/2 -right-[7px] -mt-1 h-0 w-0 border-y-8 border-b-0 border-l-8 border-y-transparent'></span>
-        </div>
-        <button
-          type='button'
-          aria-label='영화 추가하기'
-          className='to-main-indigo hover:indigo-300 mr-[-20px] flex h-15 w-15 cursor-pointer items-center justify-center rounded-full bg-gradient-to-r from-sky-500 via-blue-500 text-8xl hover:bg-gradient-to-r hover:from-sky-400 hover:via-blue-400'
-          onClick={handleClickModal}
+    <div className='fixed right-10 bottom-10 z-50 flex flex-col transition-all xl:right-20 xl:bottom-20'>
+      {isVisible && (
+        <div
+          onClick={scrollTop}
+          className='bg-gray-9fa6b2 hover:bg-gray-6e6e82 mb-4 flex h-15 w-15 cursor-pointer items-center justify-center rounded-full pt-1 transition-colors duration-200 hover:opacity-100'
         >
-          <AddIcon />
-        </button>
-      </div>
+          <ScrollTopIcon className='h-10 w-10' />
+        </div>
+      )}
+
+      {session && (
+        <div className='group relative h-15 w-15'>
+          <button
+            type='button'
+            aria-label='영화 추가하기'
+            className='to-main-indigo hover:indigo-300 mr-[-20px] flex h-15 w-15 cursor-pointer items-center justify-center rounded-full bg-gradient-to-r from-sky-500 via-blue-500 text-8xl hover:bg-gradient-to-r hover:from-sky-400 hover:via-blue-400'
+            onClick={handleClickModal}
+          >
+            <AddIcon />
+          </button>
+          <div className='bg-white-f1f1f5 absolute top-2 -left-32 ml-auto hidden max-w-xs rounded-2xl px-3 py-2 text-gray-900 shadow group-hover:block'>
+            영화 추가하기
+            <span className='border-l-white-f1f1f5 absolute top-1/2 -right-[7px] -mt-1 h-0 w-0 border-y-8 border-b-0 border-l-8 border-y-transparent'></span>
+          </div>
+        </div>
+      )}
     </div>
   );
 };
diff --git a/src/hooks/useOptimisticToggle.tsx b/src/hooks/useOptimisticToggle.tsx
index bca87ee3..c60a0fb2 100644
--- a/src/hooks/useOptimisticToggle.tsx
+++ b/src/hooks/useOptimisticToggle.tsx
@@ -1,5 +1,9 @@
 import { useEffect, useRef, useState } from 'react';
 
+import { useSession } from 'next-auth/react';
+import { toast } from 'sonner';
+
+// 세션 존재해야 사용 가능합니다!!
 const useOptimisticToggle = ({
   initialCount = 0,
   initialState,
@@ -13,8 +17,14 @@ const useOptimisticToggle = ({
   const [optimisticCount, setOptimisticCount] = useState(initialCount);
   const clickCountRef = useRef(0);
   const timerRef = useRef<NodeJS.Timeout>(null);
+  const session = useSession();
 
   const handleToggle = () => {
+    if (!session.data) {
+      toast.error('로그인이 필요합니다.');
+      return;
+    }
+
     const newToggleState = !isToggled;
     const newCount = newToggleState ? optimisticCount + 1 : optimisticCount - 1;